diff --git a/ios/brave-ios/Sources/Brave/WebFilters/AdBlock/AdBlockGroupsManager.swift b/ios/brave-ios/Sources/Brave/WebFilters/AdBlock/AdBlockGroupsManager.swift
index 619ca41db240..7c037b8a7ebb 100644
--- a/ios/brave-ios/Sources/Brave/WebFilters/AdBlock/AdBlockGroupsManager.swift
+++ b/ios/brave-ios/Sources/Brave/WebFilters/AdBlock/AdBlockGroupsManager.swift
@@ -86,7 +86,7 @@ import os
     await ContentBlockerManager.GenericBlocklistType.allCases.asyncConcurrentForEach {
       genericType in
       let blocklistType = ContentBlockerManager.BlocklistType.generic(genericType)
-      var missingModes = await self.contentBlockerManager.missingModes(
+      let missingModes = await self.contentBlockerManager.missingModes(
         for: blocklistType,
         version: genericType.version
       )
@@ -302,7 +302,11 @@ import os
   func compileEngineIfFilesAreReady(for engineType: GroupedAdBlockEngine.EngineType) {
     let manager = self.getManager(for: engineType)
     let enabledSources = sourceProvider.enabledSources(for: engineType)
-    guard manager.checkHasAllInfo(for: enabledSources) else { return }
+    let availableSources = manager.compilableFiles(for: enabledSources)
+      .map({ $0.filterListInfo.source })
+    guard enabledSources.allSatisfy({ availableSources.contains($0) }) else {
+      return
+    }
 
     Task {
       await manager.compileImmediatelyIfNeeded(
@@ -608,7 +612,6 @@ extension AdBlockEngineManager.FileInfo {
   var enabledSources: [GroupedAdBlockEngine.Source] {
     var enabledSources = FilterListStorage.shared.enabledSources
     enabledSources.append(contentsOf: CustomFilterListStorage.shared.enabledSources)
-    enabledSources.append(contentsOf: [.filterListText])
     return enabledSources
   }
 
@@ -621,7 +624,6 @@ extension AdBlockEngineManager.FileInfo {
     case .aggressive:
       var sources = FilterListStorage.shared.sources(for: engineType)
       sources.append(contentsOf: CustomFilterListStorage.shared.allSources)
-      sources.append(contentsOf: [.filterListText])
       return sources
     case .standard:
       return FilterListStorage.shared.sources(for: engineType)
diff --git a/ios/brave-ios/Sources/Brave/WebFilters/CustomFilterListStorage.swift b/ios/brave-ios/Sources/Brave/WebFilters/CustomFilterListStorage.swift
index f22454287680..dfc772fd7ce4 100644
--- a/ios/brave-ios/Sources/Brave/WebFilters/CustomFilterListStorage.swift
+++ b/ios/brave-ios/Sources/Brave/WebFilters/CustomFilterListStorage.swift
@@ -172,7 +172,7 @@ import WebKit
     guard
       let folderURL = FileManager.default.getOrCreateFolder(
         name: "custom_rules",
-        location: .applicationDirectory
+        location: .applicationSupportDirectory
       )
     else {
       throw ResourceFileError.failedToCreateCacheFolder
@@ -205,14 +205,20 @@ import WebKit
 extension CustomFilterListStorage {
   /// Gives us source representations of all the enabled custom filter lists
   @MainActor var enabledSources: [GroupedAdBlockEngine.Source] {
-    return
+    var sources =
       filterListsURLs
       .filter(\.setting.isEnabled)
       .map(\.setting.engineSource)
+    if (try? self.savedCustomRulesFileURL()) == nil { return sources }
+    sources.append(.filterListText)
+    return sources
   }
 
   /// Gives us source representations of all the custom filter lists
   @MainActor var allSources: [GroupedAdBlockEngine.Source] {
-    return filterListsURLs.map(\.setting.engineSource)
+    var sources = filterListsURLs.map(\.setting.engineSource)
+    if (try? self.savedCustomRulesFileURL()) == nil { return sources }
+    sources.append(.filterListText)
+    return sources
   }
 }