diff --git a/lib/bluetooth/devices/NuxMightyLiteMk2.dart b/lib/bluetooth/devices/NuxMightyLiteMk2.dart
index e819a9b..34abda0 100644
--- a/lib/bluetooth/devices/NuxMightyLiteMk2.dart
+++ b/lib/bluetooth/devices/NuxMightyLiteMk2.dart
@@ -189,7 +189,9 @@ class NuxMightyLiteMk2 extends NuxDevice
 
   @override
   bool get tunerAvailable {
-    return deviceControl.isConnected;
+    //probably in a firmware update
+    return false;
+    //return deviceControl.isConnected;
   }
 
   @override
diff --git a/lib/bluetooth/devices/presets/MightyMk2Preset.dart b/lib/bluetooth/devices/presets/MightyMk2Preset.dart
index 8a2a643..694974c 100644
--- a/lib/bluetooth/devices/presets/MightyMk2Preset.dart
+++ b/lib/bluetooth/devices/presets/MightyMk2Preset.dart
@@ -123,7 +123,8 @@ class MightyMk2Preset extends Preset {
       DeluxeRvb(),
       BassMate(),
       Tweedy(),
-      TwinRvb(),
+      //this one and VibroKing cause crashes or ear piercing feedbacks
+      //TwinRvb(),
       HiWire(),
       CaliCrunch(),
       ClassA15(),
@@ -136,7 +137,7 @@ class MightyMk2Preset extends Preset {
       FiremanHBE(),
       DualRect(),
       DIEVH4(),
-      VibroKing(),
+      //VibroKing(),
       Budda(),
       MrZ38(),
       SuperRvb(),