Tuki, i'm also a new member on top-sony forums and averything i can help you is to give u some web pages to find a solution for ur problem. I'm using k800i on vodafon(it was unlocked for all networks) and when i updated with seus (sonyericsson update service) it locked himself and become a cid 53 phone. Dont use seus for updating ur phone. Everythin what i could do is to pay for unlocking my phone. I wish u luck with this and be very carreful.