Ah, right, so the other slot is on A.081 probably. I’m on A.094 and my other slot is A.091.
Did you copy and paste the commands I posted? I noticed you had the wrong characters in your command before
' and ’
are hard to distinguish sometimes.
Otherwise we just take the manual route again, maybe it’s something Windows specific I don’t understand:
$ adb shell
$ su
# sha256sum /dev/block/by-name/recovery_{a,b}
There will be a dialog on your phone to grant the su
request.