Hi. I am about to help a friend update his iPad 1 from 4.3.5 to 5.1 within the next couple of weeks. He is extremely non-tech-oriented, plus he has low vision so he can't really read a regular computer screen to do the update himself. This is a non-jailbroken iPad with a few apps on it (I'd say fewer than 20, definitely fewer than 30). The reason I'm posting on here is that I seem to recall that some iPad 1 owners had a nasty glitch that made the iPad unusable when they attempted to upgrade to 5.0.1. People were having to jailbreak the device in order to revive it, a process with which I am not familiar. So I held off until the NEXT version of iOS came out, just to be on the safe side. Have there been any known issues in upgrading an iPad 1 to 5.1? If so, can anyone help me find the threads and the solutions? I don't want to brick my friend's iPad, as it's his only way to access the Internet and it would be a MAJOR quality of life issue for him to lose that. If I can get a consensus that 5.1 is a viable upgrade for a iPad 1, and I'm not going to brick my friend's device, I'll upgrade it. Thanks.