Hi, Im trying to install the GM of iOS 4.2 and so far I've downloaded the ipsw file, but I can't get it installed on my iPad. I read for an iPhone (which should be the same way) to find the device in iTunes, press the alt/option key, click and select restore. Well that didn't work for me. Nothing happens when I press the alt/option key (I'm on a mac). But when I press the ctrl key, i get a restore from backup option that uses the most recent backup. I wasn't given a chance to select the ipsw file I downloaded. Can any one offer any advice. Thanks a lot. NEVERMIND... you hold down the opt key while pressing the UPDATE button.