Two days ago, I jailbroke my iPad for the first time on iOS 4.2.1. I only wanted to use one app (BTStacks Mouse), but it seems as if that app isn't compatible with 4.2.1 right now. I really don't have any other need for the jailbreak, but I would still love to use BTStacks Mouse. So, is it possible to restore my iPad to 4.2.1 unjailbroken status, and, then, downgrade to another firmware where BTStacks Mouse is compatible? I would be willing to give up multitasking and all the other benefits of iOS4 right now if I could use a mouse w/ my iPad 