Thanks for your answer. but it doesn’t work. Keybord works after booting to OS on both USB Ports. But not in Startup. Do you have any other idea?
I have also tried with original keyboard – no chance… pressing Del, Esc nothing happens in boot sequence.
What happens: I installed Windows 10 (automatic update) this brokens after about 13%. So it does not stop booting for windows 10 and recovery does not work also. So I thought to install basic images. Is there another way to flash the tablet – external software? Can I do full reset? Android is still working.
check video: https://youtu.be/DKB8smzV2WM
Regards
Patrick