Critical problem.

[prerooted]

CRITICAL!!!
I recently got an used sony xperia u, it was rooted, but there were many problems, i thought i should install a sony stock 4.0.4 android rom. I succesfully installed it (wiped cache, factory reset, dalvik cache wiped) i had clockwork recovery. After its installed, I try to turn on phone, i see the SONY logo, everything runs fine... AND IT IS STUCK ON BLANK SCREEN!!!

irtThe phone is almost bricked now, except I can acces clockwork recovery. I did a backup on some other program it said phone hasto reboot, it rebooted fine, I thought I've got the backup. Now I'm virtually dead 

[DaniPhii]

Don't install any CWM Recovery. Just use Flashtool to flash the latest FTF file (look for 6.1.1.B.1.100 firmware).

Here you won't find the help you need. You'll find it in XDA.

Cheers.