I upgraded the ultra with the newest rom from the blackview site , all went fine.
Phone rebooted and i could use it.
But i saw that the battery is drained even when charging. This results in a dead phone (0% battery) which cannot be started again.
Phone is off and on the charger, nothing happened. Used different chargers and cables. Tested them with different phones and they all charge. So chargers are ok.
What can i do?