Hi, noobe here.

I'm trying to flash teh firmware of my k750 from teh original CDA102338/77 R2A to CDA102338/58 (basically I just want the additional italian language).

The log is fine and it shows that the firmware update was a success but the phone still has the original firmware.
The phone is locked to the UK 02 network. Does the phone need to be unlocked first?