Ok, here it goes. I received the iPad on monday night 6PM and my parents let me take it out the box to check it over, everything was great so I decided to plug it into iTunes and install iOS 4.2.1 everything went fine (download took an hour :/) but when it went to install the update, once it got to 'Preparing iPad' the iPad just shut off and froze on an apple screen and iTunes reported an "Error 21". I thought I broke it, seriously! but I tried to remedy it by using restore mode, DFU mode and various other ways of installing firmware and it just didn't work, I was stuck. But then I tried installing iOS 3.2.2 and... ERROR 21... but it just restarted and turned on like normal as if I never tried to install anything, it was in it's previous state, I was relieved! But it still refuses iOS 4.2.1 and I'm really missing out without those features, so will somebody please tell me why my iPad won't install the latest update? thanks