diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e1641ed50..3c05747d0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -53,18 +53,6 @@ jobs:
             msystem: clang64
             vcvars_arch: 'amd64_x86'
 
-          - os: windows-2022
-            name: "Windows-MSVC-Legacy"
-            msystem: ''
-            architecture: 'win32'
-            vcvars_arch: 'amd64_x86'
-            qt_ver: 5
-            qt_host: windows
-            qt_arch: 'win32_msvc2019'
-            qt_version: '5.15.2'
-            qt_modules: ''
-            qt_tools: 'tools_openssl_x86'
-
           - os: windows-2022
             name: "Windows-MSVC"
             msystem: ''
diff --git a/.github/workflows/trigger_release.yml b/.github/workflows/trigger_release.yml
index 44bcd539c..98842664d 100644
--- a/.github/workflows/trigger_release.yml
+++ b/.github/workflows/trigger_release.yml
@@ -96,9 +96,6 @@ jobs:
             PrismLauncher-Windows-MinGW-w64-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MinGW-w64-Portable-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MinGW-w64-Setup-${{ env.VERSION }}.exe
-            PrismLauncher-Windows-MSVC-Legacy-${{ env.VERSION }}.zip
-            PrismLauncher-Windows-MSVC-Legacy-Portable-${{ env.VERSION }}.zip
-            PrismLauncher-Windows-MSVC-Legacy-Setup-${{ env.VERSION }}.exe
             PrismLauncher-Windows-MSVC-arm64-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MSVC-arm64-Portable-${{ env.VERSION }}.zip
             PrismLauncher-Windows-MSVC-arm64-Setup-${{ env.VERSION }}.exe
diff --git a/flake.lock b/flake.lock
index b381db5ae..ad18ff615 100644
--- a/flake.lock
+++ b/flake.lock
@@ -106,11 +106,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1696661029,
-        "narHash": "sha256-GIB5VTkvsDIqfMpdtuetOzpm64P8wm8nBSv5Eo8XM3Y=",
+        "lastModified": 1697009197,
+        "narHash": "sha256-viVRhBTFT8fPJTb1N3brQIpFZnttmwo3JVKNuWRVc3s=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "2de1be5b51c3d6fa833f1c1f222dc867dd054b31",
+        "rev": "01441e14af5e29c9d27ace398e6dd0b293e25a54",
         "type": "github"
       },
       "original": {
@@ -153,11 +153,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1696516544,
-        "narHash": "sha256-8rKE8Je6twTNFRTGF63P9mE3lZIq917RAicdc4XJO80=",
+        "lastModified": 1696846637,
+        "narHash": "sha256-0hv4kbXxci2+pxhuXlVgftj/Jq79VSmtAyvfabCCtYk=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "66c352d33e0907239e4a69416334f64af2c685cc",
+        "rev": "42e1b6095ef80a51f79595d9951eb38e91c4e6ca",
         "type": "github"
       },
       "original": {
diff --git a/launcher/CMakeLists.txt b/launcher/CMakeLists.txt
index b627a3fa6..d15dc85de 100644
--- a/launcher/CMakeLists.txt
+++ b/launcher/CMakeLists.txt
@@ -970,6 +970,9 @@ SET(LAUNCHER_SOURCES
     ui/pages/modplatform/ImportPage.cpp
     ui/pages/modplatform/ImportPage.h
 
+    ui/pages/modplatform/OptionalModDialog.cpp
+    ui/pages/modplatform/OptionalModDialog.h
+
     ui/pages/modplatform/modrinth/ModrinthResourceModels.cpp
     ui/pages/modplatform/modrinth/ModrinthResourceModels.h
     ui/pages/modplatform/modrinth/ModrinthResourcePages.cpp
@@ -1141,6 +1144,7 @@ qt_wrap_ui(LAUNCHER_UI
     ui/pages/modplatform/legacy_ftb/Page.ui
     ui/pages/modplatform/import_ftb/ImportFTBPage.ui
     ui/pages/modplatform/ImportPage.ui
+    ui/pages/modplatform/OptionalModDialog.ui
     ui/pages/modplatform/modrinth/ModrinthPage.ui
     ui/pages/modplatform/technic/TechnicPage.ui
     ui/widgets/InstanceCardWidget.ui
diff --git a/launcher/FileSystem.cpp b/launcher/FileSystem.cpp
index 3ea844d5e..652ba2995 100644
--- a/launcher/FileSystem.cpp
+++ b/launcher/FileSystem.cpp
@@ -272,6 +272,28 @@ bool ensureFolderPathExists(QString foldernamepath)
     return success;
 }
 
+bool copyFileAttributes(QString src, QString dst)
+{
+#ifdef Q_OS_WIN32
+    auto attrs = GetFileAttributesW(src.toStdWString().c_str());
+    if (attrs == INVALID_FILE_ATTRIBUTES)
+        return false;
+    return SetFileAttributesW(dst.toStdWString().c_str(), attrs);
+#endif
+    return true;
+}
+
+// needs folders to exists
+void copyFolderAttributes(QString src, QString dst, QString relative)
+{
+    auto path = PathCombine(src, relative);
+    QDir dsrc(src);
+    while ((path = QFileInfo(path).path()).length() >= src.length()) {
+        auto dst_path = PathCombine(dst, dsrc.relativeFilePath(path));
+        copyFileAttributes(path, dst_path);
+    }
+}
+
 /**
  * @brief Copies a directory and it's contents from src to dest
  * @param offset subdirectory form src to copy to dest
@@ -310,6 +332,9 @@ bool copy::operator()(const QString& offset, bool dryRun)
         auto dst_path = PathCombine(dst, relative_dst_path);
         if (!dryRun) {
             ensureFilePathExists(dst_path);
+#ifdef Q_OS_WIN32
+            copyFolderAttributes(src, dst, relative_dst_path);
+#endif
             fs::copy(StringUtils::toStdString(src_path), StringUtils::toStdString(dst_path), opt, err);
         }
         if (err) {
diff --git a/launcher/minecraft/PackProfile.cpp b/launcher/minecraft/PackProfile.cpp
index 9e42c5dd6..9e706ae0a 100644
--- a/launcher/minecraft/PackProfile.cpp
+++ b/launcher/minecraft/PackProfile.cpp
@@ -1018,8 +1018,7 @@ std::optional<ModPlatform::ModLoaderTypes> PackProfile::getSupportedModLoaders()
     // TODO: remove this or add version condition once Quilt drops official Fabric support
     if (loaders & ModPlatform::Quilt)
         loaders |= ModPlatform::Fabric;
-    // TODO: remove this or add version condition once NeoForge drops official Forge support
-    if (loaders & ModPlatform::NeoForge)
+    if (getComponentVersion("net.minecraft") == "1.20.1" && (loaders & ModPlatform::NeoForge))
         loaders |= ModPlatform::Forge;
     return loaders;
 }
diff --git a/launcher/minecraft/mod/MetadataHandler.h b/launcher/minecraft/mod/MetadataHandler.h
index 88e9ff2b6..3496da2a0 100644
--- a/launcher/minecraft/mod/MetadataHandler.h
+++ b/launcher/minecraft/mod/MetadataHandler.h
@@ -31,6 +31,7 @@ class Mod;
 class Metadata {
    public:
     using ModStruct = Packwiz::V1::Mod;
+    using ModSide = Packwiz::V1::Side;
 
     static auto create(QDir& index_dir, ModPlatform::IndexedPack& mod_pack, ModPlatform::IndexedVersion& mod_version) -> ModStruct
     {
diff --git a/launcher/minecraft/mod/tasks/ModFolderLoadTask.cpp b/launcher/minecraft/mod/tasks/ModFolderLoadTask.cpp
index 9f79ba098..2094df4fc 100644
--- a/launcher/minecraft/mod/tasks/ModFolderLoadTask.cpp
+++ b/launcher/minecraft/mod/tasks/ModFolderLoadTask.cpp
@@ -122,7 +122,7 @@ void ModFolderLoadTask::getFromMetadata()
         auto metadata = Metadata::get(m_index_dir, entry);
 
         if (!metadata.isValid()) {
-            return;
+            continue;
         }
 
         auto* mod = new Mod(m_mods_dir, metadata);
diff --git a/launcher/modplatform/ModIndex.h b/launcher/modplatform/ModIndex.h
index 4d6759d3b..72294c399 100644
--- a/launcher/modplatform/ModIndex.h
+++ b/launcher/modplatform/ModIndex.h
@@ -137,6 +137,7 @@ struct IndexedPack {
     QString logoName;
     QString logoUrl;
     QString websiteUrl;
+    QString side;
 
     bool versionsLoaded = false;
     QVector<IndexedVersion> versions;
diff --git a/launcher/modplatform/atlauncher/ATLPackIndex.cpp b/launcher/modplatform/atlauncher/ATLPackIndex.cpp
index 3be169739..678db63cc 100644
--- a/launcher/modplatform/atlauncher/ATLPackIndex.cpp
+++ b/launcher/modplatform/atlauncher/ATLPackIndex.cpp
@@ -43,5 +43,5 @@ void ATLauncher::loadIndexedPack(ATLauncher::IndexedPack& m, QJsonObject& obj)
     m.system = Json::ensureBoolean(obj, QString("system"), false);
     m.description = Json::ensureString(obj, "description", "");
 
-    m.safeName = Json::requireString(obj, "name").replace(QRegularExpression("[^A-Za-z0-9]"), "");
+    m.safeName = Json::requireString(obj, "name").replace(QRegularExpression("[^A-Za-z0-9]"), "").toLower() + ".png";
 }
diff --git a/launcher/modplatform/flame/FlameInstanceCreationTask.cpp b/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
index 4a6271fb8..2a26ce944 100644
--- a/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
+++ b/launcher/modplatform/flame/FlameInstanceCreationTask.cpp
@@ -62,6 +62,7 @@
 #include "minecraft/World.h"
 #include "minecraft/mod/tasks/LocalResourceParse.h"
 #include "net/ApiDownload.h"
+#include "ui/pages/modplatform/OptionalModDialog.h"
 
 static const FlameAPI api;
 
@@ -509,13 +510,33 @@ void FlameCreationTask::idResolverSucceeded(QEventLoop& loop)
 void FlameCreationTask::setupDownloadJob(QEventLoop& loop)
 {
     m_files_job.reset(new NetJob(tr("Mod Download Flame"), APPLICATION->network()));
-    for (const auto& result : m_mod_id_resolver->getResults().files) {
-        QString filename = result.fileName;
+    auto results = m_mod_id_resolver->getResults().files;
+
+    QStringList optionalFiles;
+    for (auto& result : results) {
         if (!result.required) {
-            filename += ".disabled";
+            optionalFiles << FS::PathCombine(result.targetFolder, result.fileName);
+        }
+    }
+
+    QStringList selectedOptionalMods;
+    if (!optionalFiles.empty()) {
+        OptionalModDialog optionalModDialog(m_parent, optionalFiles);
+        if (optionalModDialog.exec() == QDialog::Rejected) {
+            emitAborted();
+            loop.quit();
+            return;
         }
 
-        auto relpath = FS::PathCombine("minecraft", result.targetFolder, filename);
+        selectedOptionalMods = optionalModDialog.getResult();
+    }
+    for (const auto& result : results) {
+        auto relpath = FS::PathCombine(result.targetFolder, result.fileName);
+        if (!result.required && !selectedOptionalMods.contains(relpath)) {
+            relpath += ".disabled";
+        }
+
+        relpath = FS::PathCombine("minecraft", relpath);
         auto path = FS::PathCombine(m_stagingPath, relpath);
 
         switch (result.type) {
diff --git a/launcher/modplatform/flame/FlamePackIndex.cpp b/launcher/modplatform/flame/FlamePackIndex.cpp
index 71f1e4a2d..ca8e0a853 100644
--- a/launcher/modplatform/flame/FlamePackIndex.cpp
+++ b/launcher/modplatform/flame/FlamePackIndex.cpp
@@ -1,4 +1,6 @@
 #include "FlamePackIndex.h"
+#include <QFileInfo>
+#include <QUrl>
 
 #include "Json.h"
 
@@ -9,8 +11,8 @@ void Flame::loadIndexedPack(Flame::IndexedPack& pack, QJsonObject& obj)
     pack.description = Json::ensureString(obj, "summary", "");
 
     auto logo = Json::requireObject(obj, "logo");
-    pack.logoName = Json::requireString(logo, "title");
     pack.logoUrl = Json::requireString(logo, "thumbnailUrl");
+    pack.logoName = Json::requireString(obj, "slug") + "." + QFileInfo(QUrl(pack.logoUrl).fileName()).suffix();
 
     auto authors = Json::requireArray(obj, "authors");
     for (auto authorIter : authors) {
diff --git a/launcher/modplatform/flame/PackManifest.h b/launcher/modplatform/flame/PackManifest.h
index 854cdbc41..4417c2430 100644
--- a/launcher/modplatform/flame/PackManifest.h
+++ b/launcher/modplatform/flame/PackManifest.h
@@ -48,7 +48,7 @@ struct File {
 
     int projectId = 0;
     int fileId = 0;
-    // NOTE: the opposite to 'optional'. This is at the time of writing unused.
+    // NOTE: the opposite to 'optional'
     bool required = true;
     QString hash;
     // NOTE: only set on blocked files ! Empty otherwise.
diff --git a/launcher/modplatform/legacy_ftb/PackInstallTask.cpp b/launcher/modplatform/legacy_ftb/PackInstallTask.cpp
index 761f622bb..091296751 100644
--- a/launcher/modplatform/legacy_ftb/PackInstallTask.cpp
+++ b/launcher/modplatform/legacy_ftb/PackInstallTask.cpp
@@ -70,16 +70,18 @@ void PackInstallTask::downloadPack()
     setProgress(1, 4);
     setAbortable(false);
 
-    archivePath = QString("%1/%2/%3").arg(m_pack.dir, m_version.replace(".", "_"), m_pack.file);
-
+    auto path = QString("%1/%2/%3").arg(m_pack.dir, m_version.replace(".", "_"), m_pack.file);
+    auto entry = APPLICATION->metacache()->resolveEntry("FTBPacks", path);
+    entry->setStale(true);
+    archivePath = entry->getFullPath();
     netJobContainer.reset(new NetJob("Download FTB Pack", m_network));
     QString url;
     if (m_pack.type == PackType::Private) {
-        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "privatepacks/%1").arg(archivePath);
+        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "privatepacks/%1").arg(path);
     } else {
-        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "modpacks/%1").arg(archivePath);
+        url = QString(BuildConfig.LEGACY_FTB_CDN_BASE_URL + "modpacks/%1").arg(path);
     }
-    netJobContainer->addNetAction(Net::ApiDownload::makeFile(url, archivePath));
+    netJobContainer->addNetAction(Net::ApiDownload::makeCached(url, entry));
 
     connect(netJobContainer.get(), &NetJob::succeeded, this, &PackInstallTask::unzip);
     connect(netJobContainer.get(), &NetJob::failed, this, &PackInstallTask::emitFailed);
diff --git a/launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp b/launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp
index 9ff6b374d..e732ad39c 100644
--- a/launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp
+++ b/launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp
@@ -9,6 +9,7 @@
 
 #include "modplatform/helpers/OverrideUtils.h"
 
+#include "modplatform/modrinth/ModrinthPackManifest.h"
 #include "net/ChecksumValidator.h"
 
 #include "net/ApiDownload.h"
@@ -16,8 +17,10 @@
 #include "settings/INISettingsObject.h"
 
 #include "ui/dialogs/CustomMessageBox.h"
+#include "ui/pages/modplatform/OptionalModDialog.h"
 
 #include <QAbstractButton>
+#include <vector>
 
 bool ModrinthCreationTask::abort()
 {
@@ -319,10 +322,10 @@ bool ModrinthCreationTask::parseManifest(const QString& index_path,
             }
 
             auto jsonFiles = Json::requireIsArrayOf<QJsonObject>(obj, "files", "modrinth.index.json");
-            bool had_optional = false;
+            std::vector<Modrinth::File> optionalFiles;
             for (const auto& modInfo : jsonFiles) {
                 Modrinth::File file;
-                file.path = Json::requireString(modInfo, "path");
+                file.path = Json::requireString(modInfo, "path").replace("\\", "/");
 
                 auto env = Json::ensureObject(modInfo, "env");
                 // 'env' field is optional
@@ -331,18 +334,7 @@ bool ModrinthCreationTask::parseManifest(const QString& index_path,
                     if (support == "unsupported") {
                         continue;
                     } else if (support == "optional") {
-                        // TODO: Make a review dialog for choosing which ones the user wants!
-                        if (!had_optional && show_optional_dialog) {
-                            had_optional = true;
-                            auto info = CustomMessageBox::selectable(
-                                m_parent, tr("Optional mod detected!"),
-                                tr("One or more mods from this modpack are optional. They will be downloaded, but disabled by default!"),
-                                QMessageBox::Information);
-                            info->exec();
-                        }
-
-                        if (file.path.endsWith(".jar"))
-                            file.path += ".disabled";
+                        file.required = false;
                     }
                 }
 
@@ -385,9 +377,29 @@ bool ModrinthCreationTask::parseManifest(const QString& index_path,
                     }
                 }
 
-                files.push_back(file);
+                (file.required ? files : optionalFiles).push_back(file);
             }
 
+            if (!optionalFiles.empty()) {
+                QStringList oFiles;
+                for (auto file : optionalFiles)
+                    oFiles.push_back(file.path);
+                OptionalModDialog optionalModDialog(m_parent, oFiles);
+                if (optionalModDialog.exec() == QDialog::Rejected) {
+                    emitAborted();
+                    return false;
+                }
+
+                auto selectedMods = optionalModDialog.getResult();
+                for (auto file : optionalFiles) {
+                    if (selectedMods.contains(file.path)) {
+                        file.required = true;
+                    } else {
+                        file.path += ".disabled";
+                    }
+                    files.push_back(file);
+                }
+            }
             if (set_internal_data) {
                 auto dependencies = Json::requireObject(obj, "dependencies", "modrinth.index.json");
                 for (auto it = dependencies.begin(), end = dependencies.end(); it != end; ++it) {
diff --git a/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp b/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
index a9ddb0c91..e9e8a3b75 100644
--- a/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
+++ b/launcher/modplatform/modrinth/ModrinthPackExportTask.cpp
@@ -25,6 +25,7 @@
 #include "Json.h"
 #include "MMCZip.h"
 #include "minecraft/PackProfile.h"
+#include "minecraft/mod/MetadataHandler.h"
 #include "minecraft/mod/ModFolderModel.h"
 
 const QStringList ModrinthPackExportTask::PREFIXES({ "mods/", "coremods/", "resourcepacks/", "texturepacks/", "shaderpacks/" });
@@ -129,7 +130,8 @@ void ModrinthPackExportTask::collectHashes()
                     QCryptographicHash sha1(QCryptographicHash::Algorithm::Sha1);
                     sha1.addData(data);
 
-                    ResolvedFile resolvedFile{ sha1.result().toHex(), sha512.result().toHex(), url.toEncoded(), openFile.size() };
+                    ResolvedFile resolvedFile{ sha1.result().toHex(), sha512.result().toHex(), url.toEncoded(), openFile.size(),
+                                               mod->metadata()->side };
                     resolvedFiles[relative] = resolvedFile;
 
                     // nice! we've managed to resolve based on local metadata!
@@ -272,22 +274,33 @@ QByteArray ModrinthPackExportTask::generateIndex()
         QString path = iterator.key();
         const ResolvedFile& value = iterator.value();
 
-        if (optionalFiles) {
-            // detect disabled mod
-            const QFileInfo pathInfo(path);
-            if (pathInfo.suffix() == "disabled") {
-                // rename it
-                path = pathInfo.dir().filePath(pathInfo.completeBaseName());
-                // ...and make it optional
-                QJsonObject env;
-                env["client"] = "optional";
-                env["server"] = "optional";
-                fileOut["env"] = env;
-            }
+        QJsonObject env;
+
+        // detect disabled mod
+        const QFileInfo pathInfo(path);
+        if (optionalFiles && pathInfo.suffix() == "disabled") {
+            // rename it
+            path = pathInfo.dir().filePath(pathInfo.completeBaseName());
+            env["client"] = "optional";
+            env["server"] = "optional";
+        } else {
+            env["client"] = "required";
+            env["server"] = "required";
         }
+        switch (iterator->side) {
+            case Metadata::ModSide::ClientSide:
+                env["server"] = "unsupported";
+                break;
+            case Metadata::ModSide::ServerSide:
+                env["client"] = "unsupported";
+                break;
+            case Metadata::ModSide::UniversalSide:
+                break;
+        }
+        fileOut["env"] = env;
 
         fileOut["path"] = path;
-        fileOut["downloads"] = QJsonArray{ iterator.value().url };
+        fileOut["downloads"] = QJsonArray{ iterator->url };
 
         QJsonObject hashes;
         hashes["sha1"] = value.sha1;
diff --git a/launcher/modplatform/modrinth/ModrinthPackExportTask.h b/launcher/modplatform/modrinth/ModrinthPackExportTask.h
index 83540dfac..33c42e817 100644
--- a/launcher/modplatform/modrinth/ModrinthPackExportTask.h
+++ b/launcher/modplatform/modrinth/ModrinthPackExportTask.h
@@ -44,6 +44,7 @@ class ModrinthPackExportTask : public Task {
     struct ResolvedFile {
         QString sha1, sha512, url;
         qint64 size;
+        Metadata::ModSide side;
     };
 
     static const QStringList PREFIXES;
diff --git a/launcher/modplatform/modrinth/ModrinthPackIndex.cpp b/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
index 5c8aed1ac..7d0893261 100644
--- a/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
+++ b/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
@@ -27,6 +27,11 @@
 static ModrinthAPI api;
 static ModPlatform::ProviderCapabilities ProviderCaps;
 
+bool shouldDownloadOnSide(QString side)
+{
+    return side == "required" || side == "optional";
+}
+
 // https://docs.modrinth.com/api-spec/#tag/projects/operation/getProject
 void Modrinth::loadIndexedPack(ModPlatform::IndexedPack& pack, QJsonObject& obj)
 {
@@ -53,6 +58,17 @@ void Modrinth::loadIndexedPack(ModPlatform::IndexedPack& pack, QJsonObject& obj)
     modAuthor.url = api.getAuthorURL(modAuthor.name);
     pack.authors.append(modAuthor);
 
+    auto client = shouldDownloadOnSide(Json::ensureString(obj, "client_side"));
+    auto server = shouldDownloadOnSide(Json::ensureString(obj, "server_side"));
+
+    if (server && client) {
+        pack.side = "both";
+    } else if (server) {
+        pack.side = "server";
+    } else if (client) {
+        pack.side = "client";
+    }
+
     // Modrinth can have more data than what's provided by the basic search :)
     pack.extraDataLoaded = false;
 }
diff --git a/launcher/modplatform/modrinth/ModrinthPackManifest.cpp b/launcher/modplatform/modrinth/ModrinthPackManifest.cpp
index a154317fe..d86f1c0e5 100644
--- a/launcher/modplatform/modrinth/ModrinthPackManifest.cpp
+++ b/launcher/modplatform/modrinth/ModrinthPackManifest.cpp
@@ -35,6 +35,7 @@
  */
 
 #include "ModrinthPackManifest.h"
+#include <QFileInfo>
 #include "Json.h"
 
 #include "modplatform/modrinth/ModrinthAPI.h"
@@ -56,8 +57,8 @@ void loadIndexedPack(Modpack& pack, QJsonObject& obj)
     pack.description = Json::ensureString(obj, "description");
     auto temp_author_name = Json::ensureString(obj, "author");
     pack.author = std::make_tuple(temp_author_name, api.getAuthorURL(temp_author_name));
-    pack.iconName = QString("modrinth_%1").arg(Json::ensureString(obj, "slug"));
     pack.iconUrl = Json::ensureString(obj, "icon_url");
+    pack.iconName = QString("modrinth_%1.%2").arg(Json::ensureString(obj, "slug"), QFileInfo(pack.iconUrl.fileName()).suffix());
 }
 
 void loadIndexedInfo(Modpack& pack, QJsonObject& obj)
@@ -111,9 +112,8 @@ void loadIndexedVersions(Modpack& pack, QJsonDocument& doc)
             unsortedVersions.append(file);
     }
     auto orderSortPredicate = [](const ModpackVersion& a, const ModpackVersion& b) -> bool {
-        bool a_better_release = a.version_type <= b.version_type;
         // dates are in RFC 3339 format
-        return a.date > b.date && a_better_release;
+        return a.date > b.date;
     };
 
     std::sort(unsortedVersions.begin(), unsortedVersions.end(), orderSortPredicate);
diff --git a/launcher/modplatform/modrinth/ModrinthPackManifest.h b/launcher/modplatform/modrinth/ModrinthPackManifest.h
index 8e5306774..6fc55a043 100644
--- a/launcher/modplatform/modrinth/ModrinthPackManifest.h
+++ b/launcher/modplatform/modrinth/ModrinthPackManifest.h
@@ -57,6 +57,7 @@ struct File {
     QCryptographicHash::Algorithm hashAlgorithm;
     QByteArray hash;
     QQueue<QUrl> downloads;
+    bool required = true;
 };
 
 struct DonationData {
diff --git a/launcher/modplatform/packwiz/Packwiz.cpp b/launcher/modplatform/packwiz/Packwiz.cpp
index 71f66bf3e..e35567f24 100644
--- a/launcher/modplatform/packwiz/Packwiz.cpp
+++ b/launcher/modplatform/packwiz/Packwiz.cpp
@@ -21,6 +21,8 @@
 #include <QDebug>
 #include <QDir>
 #include <QObject>
+#include <sstream>
+#include <string>
 
 #include "FileSystem.h"
 #include "StringUtils.h"
@@ -111,6 +113,7 @@ auto V1::createModFormat([[maybe_unused]] QDir& index_dir, ModPlatform::IndexedP
     mod.provider = mod_pack.provider;
     mod.file_id = mod_version.fileId;
     mod.project_id = mod_pack.addonId;
+    mod.side = stringToSide(mod_pack.side);
 
     return mod;
 }
@@ -154,38 +157,52 @@ void V1::updateModIndex(QDir& index_dir, Mod& mod)
         FS::ensureFilePathExists(index_file.fileName());
     }
 
+    toml::table update;
+    switch (mod.provider) {
+        case (ModPlatform::ResourceProvider::FLAME):
+            if (mod.file_id.toInt() == 0 || mod.project_id.toInt() == 0) {
+                qCritical() << QString("Did not write file %1 because missing information!").arg(normalized_fname);
+                return;
+            }
+            update = toml::table{
+                { "file-id", mod.file_id.toInt() },
+                { "project-id", mod.project_id.toInt() },
+            };
+            break;
+        case (ModPlatform::ResourceProvider::MODRINTH):
+            if (mod.mod_id().toString().isEmpty() || mod.version().toString().isEmpty()) {
+                qCritical() << QString("Did not write file %1 because missing information!").arg(normalized_fname);
+                return;
+            }
+            update = toml::table{
+                { "mod-id", mod.mod_id().toString().toStdString() },
+                { "version", mod.version().toString().toStdString() },
+            };
+            break;
+    }
+
     if (!index_file.open(QIODevice::ReadWrite)) {
-        qCritical() << QString("Could not open file %1!").arg(indexFileName(mod.name));
+        qCritical() << QString("Could not open file %1!").arg(normalized_fname);
         return;
     }
 
     // Put TOML data into the file
     QTextStream in_stream(&index_file);
-    auto addToStream = [&in_stream](QString&& key, QString value) { in_stream << QString("%1 = \"%2\"\n").arg(key, value); };
-
     {
-        addToStream("name", mod.name);
-        addToStream("filename", mod.filename);
-        addToStream("side", mod.side);
-
-        in_stream << QString("\n[download]\n");
-        addToStream("mode", mod.mode);
-        addToStream("url", mod.url.toString());
-        addToStream("hash-format", mod.hash_format);
-        addToStream("hash", mod.hash);
-
-        in_stream << QString("\n[update]\n");
-        in_stream << QString("[update.%1]\n").arg(ProviderCaps.name(mod.provider));
-        switch (mod.provider) {
-            case (ModPlatform::ResourceProvider::FLAME):
-                in_stream << QString("file-id = %1\n").arg(mod.file_id.toString());
-                in_stream << QString("project-id = %1\n").arg(mod.project_id.toString());
-                break;
-            case (ModPlatform::ResourceProvider::MODRINTH):
-                addToStream("mod-id", mod.mod_id().toString());
-                addToStream("version", mod.version().toString());
-                break;
-        }
+        auto tbl = toml::table{ { "name", mod.name.toStdString() },
+                                { "filename", mod.filename.toStdString() },
+                                { "side", sideToString(mod.side).toStdString() },
+                                { "download",
+                                  toml::table{
+                                      { "mode", mod.mode.toStdString() },
+                                      { "url", mod.url.toString().toStdString() },
+                                      { "hash-format", mod.hash_format.toStdString() },
+                                      { "hash", mod.hash.toStdString() },
+                                  } },
+                                { "update", toml::table{ { ProviderCaps.name(mod.provider), update } } } };
+        std::stringstream ss;
+        ss << tbl;
+        in_stream << QString::fromStdString(ss.str());
     }
 
     index_file.flush();
@@ -258,7 +275,7 @@ auto V1::getIndexForMod(QDir& index_dir, QString slug) -> Mod
     {  // Basic info
         mod.name = stringEntry(table, "name");
         mod.filename = stringEntry(table, "filename");
-        mod.side = stringEntry(table, "side");
+        mod.side = stringToSide(stringEntry(table, "side"));
     }
 
     {  // [download] info
@@ -313,4 +330,28 @@ auto V1::getIndexForMod(QDir& index_dir, QVariant& mod_id) -> Mod
     return {};
 }
 
+auto V1::sideToString(Side side) -> QString
+{
+    switch (side) {
+        case Side::ClientSide:
+            return "client";
+        case Side::ServerSide:
+            return "server";
+        case Side::UniversalSide:
+            return "both";
+    }
+    return {};
+}
+
+auto V1::stringToSide(QString side) -> Side
+{
+    if (side == "client")
+        return Side::ClientSide;
+    if (side == "server")
+        return Side::ServerSide;
+    if (side == "both")
+        return Side::UniversalSide;
+    return Side::UniversalSide;
+}
+
 }  // namespace Packwiz
diff --git a/launcher/modplatform/packwiz/Packwiz.h b/launcher/modplatform/packwiz/Packwiz.h
index 7edc18cde..dce198b0e 100644
--- a/launcher/modplatform/packwiz/Packwiz.h
+++ b/launcher/modplatform/packwiz/Packwiz.h
@@ -35,12 +35,12 @@ auto getRealIndexName(QDir& index_dir, QString normalized_index_name, bool shoul
 
 class V1 {
    public:
+    enum class Side { ClientSide = 1 << 0, ServerSide = 1 << 1, UniversalSide = ClientSide | ServerSide };
     struct Mod {
         QString slug{};
         QString name{};
         QString filename{};
-        // FIXME: make side an enum
-        QString side{ "both" };
+        Side side{ Side::UniversalSide };
 
         // [download]
         QString mode{};
@@ -93,6 +93,9 @@ class V1 {
      * If the mod doesn't have a metadata, it simply returns an empty Mod object.
      * */
     static auto getIndexForMod(QDir& index_dir, QVariant& mod_id) -> Mod;
+
+    static auto sideToString(Side side) -> QString;
+    static auto stringToSide(QString side) -> Side;
 };
 
 }  // namespace Packwiz
diff --git a/launcher/translations/TranslationsModel.cpp b/launcher/translations/TranslationsModel.cpp
index 933fe2d35..56ade8e32 100644
--- a/launcher/translations/TranslationsModel.cpp
+++ b/launcher/translations/TranslationsModel.cpp
@@ -206,7 +206,7 @@ void TranslationsModel::indexReceived()
         reloadLocalFiles();
 
         auto language = d->m_system_locale;
-        if (!findLanguage(language)) {
+        if (!findLanguageAsOptional(language).has_value()) {
             language = d->m_system_language;
         }
         selectLanguage(language);
@@ -417,14 +417,17 @@ int TranslationsModel::columnCount([[maybe_unused]] const QModelIndex& parent) c
     return 2;
 }
 
-Language* TranslationsModel::findLanguage(const QString& key)
+QVector<Language>::Iterator TranslationsModel::findLanguage(const QString& key)
 {
-    auto found = std::find_if(d->m_languages.begin(), d->m_languages.end(), [&](Language& lang) { return lang.key == key; });
-    if (found == d->m_languages.end()) {
-        return nullptr;
-    } else {
-        return found;
-    }
+    return std::find_if(d->m_languages.begin(), d->m_languages.end(), [&](Language& lang) { return lang.key == key; });
+}
+
+std::optional<Language> TranslationsModel::findLanguageAsOptional(const QString& key)
+{
+    auto found = findLanguage(key);
+    if (found != d->m_languages.end())
+        return *found;
+    return {};
 }
 
 void TranslationsModel::setUseSystemLocale(bool useSystemLocale)
@@ -436,13 +439,13 @@ void TranslationsModel::setUseSystemLocale(bool useSystemLocale)
 bool TranslationsModel::selectLanguage(QString key)
 {
     QString& langCode = key;
-    auto langPtr = findLanguage(key);
+    auto langPtr = findLanguageAsOptional(key);
 
     if (langCode.isEmpty()) {
         d->no_language_set = true;
     }
 
-    if (!langPtr) {
+    if (!langPtr.has_value()) {
         qWarning() << "Selected invalid language" << key << ", defaulting to" << defaultLangCode;
         langCode = defaultLangCode;
     } else {
@@ -527,9 +530,8 @@ bool TranslationsModel::selectLanguage(QString key)
 QModelIndex TranslationsModel::selectedIndex()
 {
     auto found = findLanguage(d->m_selectedLanguage);
-    if (found) {
-        // QVector iterator freely converts to pointer to contained type
-        return index(found - d->m_languages.begin(), 0, QModelIndex());
+    if (found != d->m_languages.end()) {
+        return index(std::distance(d->m_languages.begin(), found), 0, QModelIndex());
     }
     return QModelIndex();
 }
@@ -562,8 +564,8 @@ void TranslationsModel::updateLanguage(QString key)
         qWarning() << "Cannot update builtin language" << key;
         return;
     }
-    auto found = findLanguage(key);
-    if (!found) {
+    auto found = findLanguageAsOptional(key);
+    if (!found.has_value()) {
         qWarning() << "Cannot update invalid language" << key;
         return;
     }
@@ -578,8 +580,8 @@ void TranslationsModel::downloadTranslation(QString key)
         d->m_nextDownload = key;
         return;
     }
-    auto lang = findLanguage(key);
-    if (!lang) {
+    auto lang = findLanguageAsOptional(key);
+    if (!lang.has_value()) {
         qWarning() << "Will not download an unknown translation" << key;
         return;
     }
diff --git a/launcher/translations/TranslationsModel.h b/launcher/translations/TranslationsModel.h
index cff23ce74..96a0e9f8b 100644
--- a/launcher/translations/TranslationsModel.h
+++ b/launcher/translations/TranslationsModel.h
@@ -17,6 +17,7 @@
 
 #include <QAbstractListModel>
 #include <memory>
+#include <optional>
 
 struct Language;
 
@@ -40,7 +41,8 @@ class TranslationsModel : public QAbstractListModel {
     void setUseSystemLocale(bool useSystemLocale);
 
    private:
-    Language* findLanguage(const QString& key);
+    QVector<Language>::Iterator findLanguage(const QString& key);
+    std::optional<Language> findLanguageAsOptional(const QString& key);
     void reloadLocalFiles();
     void downloadTranslation(QString key);
     void downloadNext();
diff --git a/launcher/ui/dialogs/NewInstanceDialog.cpp b/launcher/ui/dialogs/NewInstanceDialog.cpp
index 9613c6b00..4c8708bc7 100644
--- a/launcher/ui/dialogs/NewInstanceDialog.cpp
+++ b/launcher/ui/dialogs/NewInstanceDialog.cpp
@@ -237,8 +237,7 @@ void NewInstanceDialog::setSuggestedIcon(const QString& key)
 
 InstanceTask* NewInstanceDialog::extractTask()
 {
-    InstanceTask* extracted = creationTask.get();
-    creationTask.release();
+    InstanceTask* extracted = creationTask.release();
 
     InstanceName inst_name(ui->instNameTextBox->placeholderText().trimmed(), importVersion);
     inst_name.setName(ui->instNameTextBox->text().trimmed());
diff --git a/launcher/ui/pages/instance/ManagedPackPage.cpp b/launcher/ui/pages/instance/ManagedPackPage.cpp
index 8fdaf065d..26a8302db 100644
--- a/launcher/ui/pages/instance/ManagedPackPage.cpp
+++ b/launcher/ui/pages/instance/ManagedPackPage.cpp
@@ -8,6 +8,7 @@
 #include <QUrlQuery>
 #include "ui_ManagedPackPage.h"
 
+#include <QFileDialog>
 #include <QListView>
 #include <QProxyStyle>
 #include <QStyleFactory>
@@ -223,6 +224,7 @@ ModrinthManagedPackPage::ModrinthManagedPackPage(BaseInstance* inst, InstanceWin
     Q_ASSERT(inst->isManagedPack());
     connect(ui->versionsComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(suggestVersion()));
     connect(ui->updateButton, &QPushButton::clicked, this, &ModrinthManagedPackPage::update);
+    connect(ui->updateFromFileButton, &QPushButton::clicked, this, &ModrinthManagedPackPage::updateFromFile);
 }
 
 // MODRINTH
@@ -350,6 +352,27 @@ void ModrinthManagedPackPage::update()
         m_instance_window->close();
 }
 
+void ModrinthManagedPackPage::updateFromFile()
+{
+    auto output = QFileDialog::getOpenFileUrl(this, tr("Choose update file"), QDir::homePath(), "Modrinth pack (*.mrpack *.zip)");
+    QMap<QString, QString> extra_info;
+    extra_info.insert("pack_id", m_inst->getManagedPackID());
+    extra_info.insert("pack_version_id", QString());
+    extra_info.insert("original_instance_id", m_inst->id());
+
+    auto extracted = new InstanceImportTask(output, this, std::move(extra_info));
+
+    extracted->setName(m_inst->name());
+    extracted->setGroup(APPLICATION->instances()->getInstanceGroup(m_inst->id()));
+    extracted->setIcon(m_inst->iconKey());
+    extracted->setConfirmUpdate(false);
+
+    auto did_succeed = runUpdateTask(extracted);
+
+    if (m_instance_window && did_succeed)
+        m_instance_window->close();
+}
+
 // FLAME
 
 FlameManagedPackPage::FlameManagedPackPage(BaseInstance* inst, InstanceWindow* instance_window, QWidget* parent)
@@ -358,6 +381,7 @@ FlameManagedPackPage::FlameManagedPackPage(BaseInstance* inst, InstanceWindow* i
     Q_ASSERT(inst->isManagedPack());
     connect(ui->versionsComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(suggestVersion()));
     connect(ui->updateButton, &QPushButton::clicked, this, &FlameManagedPackPage::update);
+    connect(ui->updateFromFileButton, &QPushButton::clicked, this, &FlameManagedPackPage::updateFromFile);
 }
 
 void FlameManagedPackPage::parseManagedPack()
@@ -492,4 +516,25 @@ void FlameManagedPackPage::update()
         m_instance_window->close();
 }
 
+void FlameManagedPackPage::updateFromFile()
+{
+    auto output = QFileDialog::getOpenFileUrl(this, tr("Choose update file"), QDir::homePath(), "CurseForge pack (*.zip)");
+
+    QMap<QString, QString> extra_info;
+    extra_info.insert("pack_id", m_inst->getManagedPackID());
+    extra_info.insert("pack_version_id", QString());
+    extra_info.insert("original_instance_id", m_inst->id());
+
+    auto extracted = new InstanceImportTask(output, this, std::move(extra_info));
+
+    extracted->setName(m_inst->name());
+    extracted->setGroup(APPLICATION->instances()->getInstanceGroup(m_inst->id()));
+    extracted->setIcon(m_inst->iconKey());
+    extracted->setConfirmUpdate(false);
+
+    auto did_succeed = runUpdateTask(extracted);
+
+    if (m_instance_window && did_succeed)
+        m_instance_window->close();
+}
 #include "ManagedPackPage.moc"
diff --git a/launcher/ui/pages/instance/ManagedPackPage.h b/launcher/ui/pages/instance/ManagedPackPage.h
index 1ac6fc038..d77cb97b8 100644
--- a/launcher/ui/pages/instance/ManagedPackPage.h
+++ b/launcher/ui/pages/instance/ManagedPackPage.h
@@ -65,6 +65,7 @@ class ManagedPackPage : public QWidget, public BasePage {
     virtual void suggestVersion();
 
     virtual void update(){};
+    virtual void updateFromFile(){};
 
    protected slots:
     /** Does the necessary UI changes for when something failed.
@@ -123,6 +124,7 @@ class ModrinthManagedPackPage final : public ManagedPackPage {
     void suggestVersion() override;
 
     void update() override;
+    void updateFromFile() override;
 
    private:
     NetJob::Ptr m_fetch_job = nullptr;
@@ -145,6 +147,7 @@ class FlameManagedPackPage final : public ManagedPackPage {
     void suggestVersion() override;
 
     void update() override;
+    void updateFromFile() override;
 
    private:
     NetJob::Ptr m_fetch_job = nullptr;
diff --git a/launcher/ui/pages/instance/ManagedPackPage.ui b/launcher/ui/pages/instance/ManagedPackPage.ui
index 05e91bbca..54ff08e94 100644
--- a/launcher/ui/pages/instance/ManagedPackPage.ui
+++ b/launcher/ui/pages/instance/ManagedPackPage.ui
@@ -153,6 +153,19 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QPushButton" name="updateFromFileButton">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Update from file</string>
+         </property>
+        </widget>
+       </item>
       </layout>
      </item>
      <item>
diff --git a/launcher/ui/pages/modplatform/OptionalModDialog.cpp b/launcher/ui/pages/modplatform/OptionalModDialog.cpp
new file mode 100644
index 000000000..fc1c8b3cb
--- /dev/null
+++ b/launcher/ui/pages/modplatform/OptionalModDialog.cpp
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "OptionalModDialog.h"
+#include "ui_OptionalModDialog.h"
+
+OptionalModDialog::OptionalModDialog(QWidget* parent, const QStringList& mods) : QDialog(parent), ui(new Ui::OptionalModDialog)
+{
+    ui->setupUi(this);
+    for (const QString& mod : mods) {
+        auto item = new QListWidgetItem(mod, ui->list);
+        item->setFlags(item->flags() | Qt::ItemIsUserCheckable);
+        item->setCheckState(Qt::Unchecked);
+        item->setData(Qt::UserRole, mod);
+    }
+
+    connect(ui->selectAllButton, &QPushButton::clicked, ui->list, [this] {
+        for (int i = 0; i < ui->list->count(); i++)
+            ui->list->item(i)->setCheckState(Qt::Checked);
+    });
+    connect(ui->clearAllButton, &QPushButton::clicked, ui->list, [this] {
+        for (int i = 0; i < ui->list->count(); i++)
+            ui->list->item(i)->setCheckState(Qt::Unchecked);
+    });
+    connect(ui->list, &QListWidget::itemActivated, [](QListWidgetItem* item) {
+        if (item->checkState() == Qt::Checked)
+            item->setCheckState(Qt::Unchecked);
+        else
+            item->setCheckState(Qt::Checked);
+    });
+}
+
+OptionalModDialog::~OptionalModDialog()
+{
+    delete ui;
+}
+
+QStringList OptionalModDialog::getResult()
+{
+    QStringList result;
+    result.reserve(ui->list->count());
+    for (int i = 0; i < ui->list->count(); i++) {
+        auto item = ui->list->item(i);
+        if (item->checkState() == Qt::Checked)
+            result.append(item->data(Qt::UserRole).toString());
+    }
+    return result;
+}
diff --git a/launcher/ui/pages/modplatform/OptionalModDialog.h b/launcher/ui/pages/modplatform/OptionalModDialog.h
new file mode 100644
index 000000000..1897c1fca
--- /dev/null
+++ b/launcher/ui/pages/modplatform/OptionalModDialog.h
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QAbstractListModel>
+#include <QDialog>
+
+namespace Ui {
+class OptionalModDialog;
+}
+
+class OptionalModDialog : public QDialog {
+    Q_OBJECT
+
+   public:
+    OptionalModDialog(QWidget* parent, const QStringList& mods);
+    ~OptionalModDialog() override;
+
+    QStringList getResult();
+
+   private:
+    Ui::OptionalModDialog* ui;
+};
diff --git a/launcher/ui/pages/modplatform/OptionalModDialog.ui b/launcher/ui/pages/modplatform/OptionalModDialog.ui
new file mode 100644
index 000000000..0b809d2cb
--- /dev/null
+++ b/launcher/ui/pages/modplatform/OptionalModDialog.ui
@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>OptionalModDialog</class>
+ <widget class="QDialog" name="OptionalModDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>550</width>
+    <height>310</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Select Optional Mods</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout_2">
+   <item row="1" column="0">
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QListWidget" name="list">
+       <property name="defaultDropAction">
+        <enum>Qt::IgnoreAction</enum>
+       </property>
+       <property name="alternatingRowColors">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <item>
+        <widget class="QPushButton" name="selectAllButton">
+         <property name="text">
+          <string>Select All</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="clearAllButton">
+         <property name="text">
+          <string>Deselect All</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="horizontalSpacer">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>40</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item>
+        <widget class="QLabel" name="label">
+         <property name="text">
+          <string>Unchecked mods will be disabled.</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <widget class="QDialogButtonBox" name="buttonBox">
+       <property name="standardButtons">
+        <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>OptionalModDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>274</x>
+     <y>284</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>274</x>
+     <y>154</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>OptionalModDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>274</x>
+     <y>284</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>274</x>
+     <y>154</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/launcher/ui/pages/modplatform/atlauncher/AtlListModel.cpp b/launcher/ui/pages/modplatform/atlauncher/AtlListModel.cpp
index b6fb71535..d46b97af1 100644
--- a/launcher/ui/pages/modplatform/atlauncher/AtlListModel.cpp
+++ b/launcher/ui/pages/modplatform/atlauncher/AtlListModel.cpp
@@ -63,7 +63,7 @@ QVariant ListModel::data(const QModelIndex& index, int role) const
             }
             auto icon = APPLICATION->getThemedIcon("atlauncher-placeholder");
 
-            auto url = QString(BuildConfig.ATL_DOWNLOAD_SERVER_URL + "launcher/images/%1.png").arg(pack.safeName.toLower());
+            auto url = QString(BuildConfig.ATL_DOWNLOAD_SERVER_URL + "launcher/images/%1").arg(pack.safeName);
             ((ListModel*)this)->requestLogo(pack.safeName, url);
 
             return icon;
diff --git a/launcher/ui/pages/modplatform/atlauncher/AtlOptionalModDialog.h b/launcher/ui/pages/modplatform/atlauncher/AtlOptionalModDialog.h
index 55903003b..767d277d9 100644
--- a/launcher/ui/pages/modplatform/atlauncher/AtlOptionalModDialog.h
+++ b/launcher/ui/pages/modplatform/atlauncher/AtlOptionalModDialog.h
@@ -38,7 +38,7 @@
 #include <QAbstractListModel>
 #include <QDialog>
 
-#include "modplatform/atlauncher/ATLPackIndex.h"
+#include "modplatform/atlauncher/ATLPackManifest.h"
 #include "net/NetJob.h"
 
 namespace Ui {
diff --git a/launcher/ui/pages/modplatform/atlauncher/AtlPage.cpp b/launcher/ui/pages/modplatform/atlauncher/AtlPage.cpp
index c7e800278..e492830c6 100644
--- a/launcher/ui/pages/modplatform/atlauncher/AtlPage.cpp
+++ b/launcher/ui/pages/modplatform/atlauncher/AtlPage.cpp
@@ -114,8 +114,8 @@ void AtlPage::suggestCurrent()
     auto uiSupport = new AtlUserInteractionSupportImpl(this);
     dialog->setSuggestedPack(selected.name, selectedVersion, new ATLauncher::PackInstallTask(uiSupport, selected.name, selectedVersion));
 
-    auto editedLogoName = selected.safeName;
-    auto url = QString(BuildConfig.ATL_DOWNLOAD_SERVER_URL + "launcher/images/%1.png").arg(selected.safeName.toLower());
+    auto editedLogoName = "atl_" + selected.safeName;
+    auto url = QString(BuildConfig.ATL_DOWNLOAD_SERVER_URL + "launcher/images/%1").arg(selected.safeName);
     listModel->getLogo(selected.safeName, url,
                        [this, editedLogoName](QString logo) { dialog->setSuggestedIconFromFile(logo, editedLogoName); });
 }
diff --git a/launcher/ui/pages/modplatform/flame/FlamePage.cpp b/launcher/ui/pages/modplatform/flame/FlamePage.cpp
index 584d94ad9..16055c4bb 100644
--- a/launcher/ui/pages/modplatform/flame/FlamePage.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlamePage.cpp
@@ -228,8 +228,7 @@ void FlamePage::suggestCurrent()
     extra_info.insert("pack_version_id", QString::number(version.fileId));
 
     dialog->setSuggestedPack(current.name, new InstanceImportTask(version.downloadUrl, this, std::move(extra_info)));
-    QString editedLogoName;
-    editedLogoName = "curseforge_" + current.logoName;
+    QString editedLogoName = "curseforge_" + current.logoName;
     listModel->getLogo(current.logoName, current.logoUrl,
                        [this, editedLogoName](QString logo) { dialog->setSuggestedIconFromFile(logo, editedLogoName); });
 }
diff --git a/launcher/ui/pages/modplatform/import_ftb/ImportFTBPage.cpp b/launcher/ui/pages/modplatform/import_ftb/ImportFTBPage.cpp
index d3ead0837..43ff1c0fe 100644
--- a/launcher/ui/pages/modplatform/import_ftb/ImportFTBPage.cpp
+++ b/launcher/ui/pages/modplatform/import_ftb/ImportFTBPage.cpp
@@ -90,7 +90,7 @@ void ImportFTBPage::suggestCurrent()
     }
 
     dialog->setSuggestedPack(selected.name, new PackInstallTask(selected));
-    QString editedLogoName = QString("ftb_%1").arg(selected.id);
+    QString editedLogoName = QString("ftb_%1_%2,jpg").arg(selected.name, selected.id);
     dialog->setSuggestedIconFromFile(FS::PathCombine(selected.path, "folder.jpg"), editedLogoName);
 }
 
diff --git a/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp b/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp
index 4104f1391..0ecaf4625 100644
--- a/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp
+++ b/launcher/ui/pages/modplatform/legacy_ftb/Page.cpp
@@ -179,15 +179,11 @@ void Page::suggestCurrent()
     }
 
     dialog->setSuggestedPack(selected.name, selectedVersion, new PackInstallTask(APPLICATION->network(), selected, selectedVersion));
-    QString editedLogoName;
-    if (selected.logo.toLower().startsWith("ftb")) {
-        editedLogoName = selected.logo;
-    } else {
-        editedLogoName = "ftb_" + selected.logo;
+    QString editedLogoName = selected.logo;
+    if (!selected.logo.toLower().startsWith("ftb")) {
+        editedLogoName = "ftb_" + editedLogoName;
     }
 
-    editedLogoName = editedLogoName.left(editedLogoName.lastIndexOf(".png"));
-
     if (selected.type == PackType::Public) {
         publicListModel->getLogo(selected.logo,
                                  [this, editedLogoName](QString logo) { dialog->setSuggestedIconFromFile(logo, editedLogoName); });
diff --git a/launcher/ui/pages/modplatform/technic/TechnicModel.cpp b/launcher/ui/pages/modplatform/technic/TechnicModel.cpp
index 3cd1d9a2d..6f1810d71 100644
--- a/launcher/ui/pages/modplatform/technic/TechnicModel.cpp
+++ b/launcher/ui/pages/modplatform/technic/TechnicModel.cpp
@@ -41,7 +41,9 @@
 #include "net/ApiDownload.h"
 #include "ui/widgets/ProjectItem.h"
 
+#include <QFileInfo>
 #include <QIcon>
+#include <QUrl>
 
 Technic::ListModel::ListModel(QObject* parent) : QAbstractListModel(parent) {}
 
@@ -193,7 +195,7 @@ void Technic::ListModel::searchRequestFinished()
                         pack.logoName = "null";
                     } else {
                         pack.logoUrl = rawURL;
-                        pack.logoName = rawURL.section(QLatin1Char('/'), -1);
+                        pack.logoName = pack.slug + "." + QFileInfo(QUrl(rawURL).fileName()).suffix();
                     }
                     pack.broken = false;
                     newList.append(pack);
@@ -215,7 +217,7 @@ void Technic::ListModel::searchRequestFinished()
                     auto iconUrl = Json::requireString(iconObj, "url");
 
                     pack.logoUrl = iconUrl;
-                    pack.logoName = iconUrl.section(QLatin1Char('/'), -1);
+                    pack.logoName = pack.slug + "." + QFileInfo(QUrl(iconUrl).fileName()).suffix();
                 } else {
                     pack.logoUrl = "null";
                     pack.logoName = "null";
diff --git a/tests/Packwiz_test.cpp b/tests/Packwiz_test.cpp
index d1b274d12..e4abda9f9 100644
--- a/tests/Packwiz_test.cpp
+++ b/tests/Packwiz_test.cpp
@@ -42,7 +42,7 @@ class PackwizTest : public QObject {
 
         QCOMPARE(metadata.name, "Borderless Mining");
         QCOMPARE(metadata.filename, "borderless-mining-1.1.1+1.18.jar");
-        QCOMPARE(metadata.side, "client");
+        QCOMPARE(metadata.side, Packwiz::V1::Side::ClientSide);
 
         QCOMPARE(metadata.url, QUrl("https://cdn.modrinth.com/data/kYq5qkSL/versions/1.1.1+1.18/borderless-mining-1.1.1+1.18.jar"));
         QCOMPARE(metadata.hash_format, "sha512");
@@ -72,7 +72,7 @@ class PackwizTest : public QObject {
 
         QCOMPARE(metadata.name, "Screenshot to Clipboard (Fabric)");
         QCOMPARE(metadata.filename, "screenshot-to-clipboard-1.0.7-fabric.jar");
-        QCOMPARE(metadata.side, "both");
+        QCOMPARE(metadata.side, Packwiz::V1::Side::UniversalSide);
 
         QCOMPARE(metadata.url, QUrl("https://edge.forgecdn.net/files/3509/43/screenshot-to-clipboard-1.0.7-fabric.jar"));
         QCOMPARE(metadata.hash_format, "murmur2");
diff --git a/tests/Version_test.cpp b/tests/Version_test.cpp
index d25bf7bb5..4c67cc544 100644
--- a/tests/Version_test.cpp
+++ b/tests/Version_test.cpp
@@ -55,6 +55,8 @@ class VersionTest : public QObject {
                                               << "2.2.0" << true << false;
         QTest::newRow("lessThan, two-digit") << "1.41"
                                              << "1.42" << true << false;
+        QTest::newRow("lessThan, snapshot") << "1.20.0-rc2"
+                                            << "1.20.1" << true << false;
 
         QTest::newRow("greaterThan, explicit 1") << "1.2.1"
                                                  << "1.2.0" << false << false;
@@ -72,6 +74,8 @@ class VersionTest : public QObject {
                                                  << "1.2" << false << false;
         QTest::newRow("greaterThan, two-digit") << "1.42"
                                                 << "1.41" << false << false;
+        QTest::newRow("greaterThan, snapshot") << "1.20.2-rc2"
+                                               << "1.20.1" << false << false;
     }
 
    private slots: