Yes, you suppose to type Y, then enter, it's ok. Tell me which option you used in tweak BB ? I think option 1, then again 1, Correct ? If yes, try to go to this tweak again, choose 1, then choose 2, and after this try again command: Code: apt-get install --reinstall system-ui-screenlock-nokia Now it will not ask you about Y, it just install this package... Reboot your phone and report here...
apt-get install --reinstall system-ui-screenlock-nokia