just update ur erom if the phone dosent turn on or gives u a white screen, or if u have damaged the file system the fone will shut down or not turn on. on a k800i it is common for a faulty erom so u can update it useing a client called kulankendi client that updates the erom to version R3A016 and will make the phone cid52 if it isnt already

to flash the phone with the patch unlock

1.get the latest cid52 firmware main and filesystem the latest should be R8BF003.
2.generate a patch useing the simox patch genorator
3.add both files on to setool lite (fw and Main)
4.add the patch to misc files
5.click flash
then to apply the unlock click no yes will remove the patch then ur phone will be updated and unlocked