help to downgrade from 907 to 221
how can i downgrade from Firmware 907 to 221 ? I have put the firmware dload to sd card and make a local update. After the phone reboots an check every file modem, system and so on... all is okay but it then do not downgrade to 221 and write FAIL to the screen.
i'm very happy if anybody can help me how to downgrade to firmware 221
Thanks for your Help