I have version 4.2.1 on an Ipad 1. It has always worked just fine (since January) until last week when we were riding along in the car and I tried to get to ebay. The screen turned black. I did the reboot and it came back, but after trying to use it for a few minutes it went black again. So I came home and looked up on this board what to do. I saw that downloading the latest version would fix it. I've tried downloading the newest version 3 times. It takes 3 hours on my internet connection and just as it gets to the last minute after all 900 something mbs are downloaded according to the screen, it says can not process and that's the end of that. I can only use my ipad a couple minutes and it goes black. I have to reboot 2 or 3 times to actually get it to come back on. Any suggestions? Is it because I don't have the latest version of the software? Thanks.