Just upgraded to iPhone 4 (and promptly jailbroke it). I'd like to sell my also jailbroken (Greenpois0n) 3GS. Problem is that it's stuck on the Greenpois0n logo with loading animation. Neither the system nor iTunes will detect it on two different PCs with different OSs (XP, 7). Does anyone have any ideas? Does it have anything to do with having removed (and destroyed) the SIM card?
I should have prefaced my post with "WARNING: N00B ALERT!" Thanks for your reply, iAnnie. I figured it out in an AHA moment just after posting. Put in DFU mode, THEN launch iTunes to restore. Thanks again!