Debranding k800 CID53. PLEASE HELP

My k800 was unlocked (debranded), but then I updated the software and it got locked again :( :( :( :(

I am trying to find a newbee tutorial of how to debrand (unlock) it but so far I haven`t found much, but right now I cannot afford to take it to a service so I will try to do it myself. Some said that it is probably updated to CID53.

Can somebody PLEASE recommend a decent tutorial of how to do this?

Maybe you can give me an advice how can I check what firmware and CID my phone has currently...

Thank you in advance.

Download Setool2lite 1.11. Install USB flash driver:
http://www.topsony.com/forum/phone-x...html#post66747.
Identify your phone:
http://www.topsony.com/forum/upgrade...html#post74687