Just normal shift-click restore process with the firmware.
*Beware*
Try at your own risk . I already tried, restore went fine. Turned off for the night. Turing on didn't bode too well. Black screen and wouldn't boot. Had to go into DFU mode and downgrade to 2.2.1. Now have to Jailbreak again
Oh well, bluetooth & copy & paste were fun while it lasted.




Linear Mode