On my old second device I have exactly these issue.
My plan was to reflash android, to use my new dispay on my daily driver (LOS 22.2).
Any ideas?
Second device hast stock android 9 ; unlocked ; not rooted
For my main Pro1 and my spare Pro1 I use the same adb drivers, notebook, usb cable and usb port.
UPDATE:
I have to execute a batch file, to edit the registry of my Win11.
You can find the file, if you search: How to fix press any key to shutdown fastbood error
After that, I phone is still in fastboot mode