diff --git a/Source/AppScaffolding/LibationScaffolding.cs b/Source/AppScaffolding/LibationScaffolding.cs
index 033e657b..15fdb3a0 100644
--- a/Source/AppScaffolding/LibationScaffolding.cs
+++ b/Source/AppScaffolding/LibationScaffolding.cs
@@ -349,7 +349,7 @@ public static class LibationScaffolding
 
 	private static void wireUpSystemEvents(Configuration configuration)
 	{
-		LibraryCommands.LibrarySizeChanged += (object? _, List<DataLayer.LibraryBook> libraryBooks)
+		LibraryCommands.LibrarySizeChanged += (_, libraryBooks)
 			=> SearchEngineCommands.FullReIndex(libraryBooks);
 
 		LibraryCommands.BookUserDefinedItemCommitted += (_, books)
@@ -423,26 +423,38 @@ public static class LibationScaffolding
 		var releaseIndex = JObject.Parse(System.Text.Encoding.ASCII.GetString(bts));
 
 		string? regexPattern;
+		string? releaseIdString = null;
 
 		try
 		{
-			regexPattern = releaseIndex.Value<string>(InteropFactory.Create().ReleaseIdString);
+			releaseIdString = InteropFactory.Create().ReleaseIdString;
+			regexPattern = releaseIndex.Value<string>(releaseIdString);
 		}
 		catch
 		{
 			regexPattern = null;
 		}
+		if (string.IsNullOrEmpty(regexPattern) && Configuration.IsLinux)
+		{
+			var baseId = ReleaseIdentifier.ToString();
+			regexPattern = releaseIndex.Value<string>($"{baseId}_RPM")
+				?? releaseIndex.Value<string>($"{baseId}_DEB");
+			releaseIdString ??= $"{baseId}_RPM";
+		}
 		if (string.IsNullOrEmpty(regexPattern))
 			regexPattern = releaseIndex.Value<string>(ReleaseIdentifier.ToString());
 		if (string.IsNullOrEmpty(regexPattern))
 		{
-			Log.Logger.Warning("Release index has no entry for this platform (ReleaseIdentifier: {ReleaseId}). Version check inconclusive.", ReleaseIdentifier);
+			Log.Logger.Warning("Release index has no entry for this platform (ReleaseIdentifier: {ReleaseId}, ReleaseIdString: {ReleaseIdString}). Version check inconclusive.", ReleaseIdentifier, releaseIdString);
 			return (null, null, null, false);
 		}
 
 		var regex = new System.Text.RegularExpressions.Regex(regexPattern, System.Text.RegularExpressions.RegexOptions.IgnoreCase);
 		var zip = latestRelease?.Assets?.FirstOrDefault(a => regex.IsMatch(a.Name));
 
+		if (zip is not null && !string.IsNullOrEmpty(releaseIdString))
+			Log.Logger.Information("Update asset matched using {ReleaseIdString}: {AssetName}", releaseIdString, zip.Name);
+
 		return (releaseVersion, latestRelease, zip, true);
 	}
 }
@@ -499,7 +511,7 @@ internal static class Migrations
 	class FilterState_6_6_9
 	{
 		public bool UseDefault { get; set; }
-		public List<string> Filters { get; set; } = new();
+		public List<string> Filters { get; set; } = [];
 	}
 
 	public static void migrate_to_v12_0_1(Configuration config)
@@ -520,7 +532,7 @@ internal static class Migrations
 				if (JArray.Parse(File.ReadAllText(jsonFileV1)) is not JArray v1Cache || v1Cache.Count == 0)
 					return;
 
-				Dictionary<string, JArray> cache = new();
+				Dictionary<string, JArray> cache = [];
 
 				//Convert to c# objects to speed up searching by ID inside the iterator 
 				var allItems
@@ -612,10 +624,12 @@ internal static class Migrations
 			if (JsonConvert.DeserializeObject<FilterState_6_6_9>(File.ReadAllText(QuickFilters.JsonFile))
 				is FilterState_6_6_9 inMemState)
 			{
-				// Copy old structure to new.
-				QuickFilters.InMemoryState = new();
-				QuickFilters.InMemoryState.UseDefault = inMemState.UseDefault;
-				foreach (var oldFilter in inMemState.Filters)
+                // Copy old structure to new.
+                QuickFilters.InMemoryState = new()
+                {
+                    UseDefault = inMemState.UseDefault
+                };
+                foreach (var oldFilter in inMemState.Filters)
 					QuickFilters.InMemoryState.Filters.Add(new QuickFilters.NamedFilter(oldFilter, null));
 
 				return;
diff --git a/Source/LoadByOS/LinuxConfigApp/LinuxInterop.cs b/Source/LoadByOS/LinuxConfigApp/LinuxInterop.cs
index f8921468..c261481b 100644
--- a/Source/LoadByOS/LinuxConfigApp/LinuxInterop.cs
+++ b/Source/LoadByOS/LinuxConfigApp/LinuxInterop.cs
@@ -27,7 +27,7 @@ internal class LinuxInterop : IInteropFunctions
 	public void SetFolderIcon(byte[] imageJpegBytes, string directory) => throw new PlatformNotSupportedException();
 	public void DeleteFolderIcon(string directory) => throw new PlatformNotSupportedException();
 
-	public string ReleaseIdString => LibationScaffolding.ReleaseIdentifier.ToString() + (File.Exists("/usr/bin/apt") || File.Exists("/bin/apt") ? "_DEB" : "_RPM");
+	public string ReleaseIdString => LibationScaffolding.ReleaseIdentifier.ToString() + LinuxPackageFormatSuffix();
 
 	//only run the auto upgrader if the current app was installed from the
 	//.deb or .rpm package. Try to detect this by checking if the symlink exists.
@@ -73,31 +73,44 @@ internal class LinuxInterop : IInteropFunctions
 
 	private static bool TryResolvePackageManager(string upgradeBundle, out string pkgExe, out string[] pkgArgs)
 	{
-		if (TryFirstExisting(out pkgExe, "/usr/bin/dnf5", "/bin/dnf5"))
+		var isRpmBundle = string.Equals(Path.GetExtension(upgradeBundle), ".rpm", StringComparison.OrdinalIgnoreCase);
+		var isDebBundle = string.Equals(Path.GetExtension(upgradeBundle), ".deb", StringComparison.OrdinalIgnoreCase);
+
+		if (isRpmBundle || (!isDebBundle && UsesRpmPackageFormat()))
 		{
-			pkgArgs = new[] { "install", "-y", upgradeBundle };
-			return true;
+			if (TryFirstExisting(out pkgExe, "/usr/bin/dnf5", "/bin/dnf5")
+				|| TryFirstExisting(out pkgExe, "/usr/bin/dnf", "/bin/dnf")
+				|| TryFirstExisting(out pkgExe, "/usr/bin/yum", "/bin/yum"))
+			{
+				pkgArgs = new[] { "install", "-y", upgradeBundle };
+				return true;
+			}
 		}
-		if (TryFirstExisting(out pkgExe, "/usr/bin/dnf", "/bin/dnf"))
+
+		if (isDebBundle || UsesDebPackageFormat())
 		{
-			pkgArgs = new[] { "install", "-y", upgradeBundle };
-			return true;
-		}
-		if (TryFirstExisting(out pkgExe, "/usr/bin/yum", "/bin/yum"))
-		{
-			pkgArgs = new[] { "install", "-y", upgradeBundle };
-			return true;
-		}
-		if (TryFirstExisting(out pkgExe, "/usr/bin/apt", "/bin/apt"))
-		{
-			pkgArgs = new[] { "install", "-y", "-o", "Dpkg::Options::=--force-confdef", "-o", "Dpkg::Options::=--force-confold", upgradeBundle };
-			return true;
+			if (TryFirstExisting(out pkgExe, "/usr/bin/apt", "/bin/apt"))
+			{
+				pkgArgs = new[] { "install", "-y", "-o", "Dpkg::Options::=--force-confdef", "-o", "Dpkg::Options::=--force-confold", upgradeBundle };
+				return true;
+			}
 		}
+
 		pkgExe = "";
 		pkgArgs = Array.Empty<string>();
 		return false;
 	}
 
+	// RHEL/Fedora can have apt installed for .deb files; prefer native RPM managers when present.
+	internal static string LinuxPackageFormatSuffix()
+		=> UsesRpmPackageFormat() ? "_RPM" : UsesDebPackageFormat() ? "_DEB" : "_RPM";
+
+	private static bool UsesRpmPackageFormat()
+		=> TryFirstExisting(out _, "/usr/bin/dnf5", "/bin/dnf5", "/usr/bin/dnf", "/bin/dnf", "/usr/bin/yum", "/bin/yum");
+
+	private static bool UsesDebPackageFormat()
+		=> TryFirstExisting(out _, "/usr/bin/apt", "/bin/apt");
+
 	private static bool TryFirstExisting(out string path, params string[] candidates)
 	{
 		foreach (var c in candidates)
@@ -150,7 +163,7 @@ internal class LinuxInterop : IInteropFunctions
 					console[2],
 					"/bin/sh",
 					Path.Combine(Configuration.ProcessDirectory, runasroot), //script file
-					"Installing libation.deb", //command title
+					"Installing Libation package", //command title
 					command, // command to execute vis /bin/sh
 					$"Please run '{command}' manually" // error message to display in the terminal
 				}