Hello, I have an iPad 2 Wifi version with iOS 5.0 and I'm eager to jailbreak it. I'm aware of the news of a probable jailbreak for it in the next week but I don't know what I should do prior to it. What is a SHSH blob? Do I have to use tinyumbrella to backup it? Also, what's the signing window? Should I update my iPad 2 wifi to iOS 5.0.1? Thanks!