A word of caution to those of you who will be downloading and installing the new iOS 5.1 beta that Apple seeded earlier today.

According to jailbreak hacker iH8Sn0w, iOS 5.1 beta will expire on January 14th, 2012 at 8PM EST. This means that you have to update to a newer beta version or the official firmware before that time, or else your device will be unusable until you restore…

That’s not a big deal in itself, but it might come as a surprise if you don’t expect it. Trust me, I’ve been there!