Xperia X10-II stuck at unlocking the encryption

General
1

I don’t know what I did, but my phone is stuck at the stage where the security code is asked to unlocking the encryption. The red LED is present and I can’t turn the phone off.

Has someone an idea what I may do apart waiting until the battery is empty?

2

Ok, I found out and it’s the same way as the Sony X. Press Volume Up and Power Keys down to turn off.
Source Known Issues | Sailfish OS Documentation