Thank you for the reaction, but that is my problem. If I am holding PWR and vol down the warning screen comes up, releasing the PWR and the warning screen stayes.
If I keep holding the PWR with the vol down, first there is the warning screen,then there is blank screen with continous green led, which just stayes.
Same thing if press vol up+ vol down + power. Releasing the PWR just makes the warning screen stay.
Is it possible that the fastboot mode is broken? (I did nor downgrade). I am very desperate now