I've been poking around this forum for a while now, looking for possible solutions, and none of them have seemed to work. Maybe there's something I missed, but in case there isn't, I wanted to ask about my problem. I wanted to upgrade my iPad 2 from 5.1.1 to the newest firmware but, as stated above, am now stuck in a recovery loop. I've tried TinyUmbrella's exit recovery feature, and that didn't work; it simply booted the ipad back into a blank screen, then the recovery screen pops up again and a new Recovery Device number pops up on the left. This has happened every time I've tried to do this, with more and more numbers popping into the pane on the left. In iTunes, I'm getting "the ipad could not be restored an unknown error occurred (21)" messages after attempting to do a full system restore. I've assured that my hosts file is commented out so gs. apple. com/ doesn't point to Cydia. I also cannot switch the ipad off by pressing the power + home buttons; the same thing happens here that happens with TinyUmbrella (black screen, then back to recovery). I'm getting pretty frustrated. I use my iPad for my work, as it is easier to lug around than a laptop, so having it crash out like this is, to put it mildly, pretty inconvenient. I'm currently trying to do a restore through redsn0w (as explained in ipadforums. net/jailbreaking-hacking-tutorials-how-guides/92572-tutorial-re-restore-ios-5-x-ipad2-ipad3-using-redsn0w-shsh-blobs. html), but if that doesn't work I will be pretty much out of ideas. If anyone here has any suggestions or insights, please let me know. Thanks much.