Thanks A lot brother. I just unlocked my first phone a SE S500i. I had some trouble with the firmware though. The SETool2lite v1.11 would not generate the quick_access_XXXX_XXXXXXX.vkp file. was giving an error in reading the R6BC200 main file. SO i found the quick_access_XXXX_XXXXXXX.vkp file online too on ********.cz. That worked fine and the fone was unlocked in 30 mins.