got everything working now with Android 11 and the beta2 with Retroarch.
only Dolphin and Redream wont start.
In Dolphin there's a message "Invalid Rom or is missing..."
I checked everything and it was okay.
Which Dolphin Version will be Compatible?
And Redream worked n the before's Build.
Now it stays black and returns to HS.
Something changed to Redream as well?