Accidentally updated your iPhone 3GS to IOS 4.2.1 through iTunes? Although IOS 4.2.1 is still jailbreakable using redsn0w, but the jailbreak for iPhone 3GS with new bootrom is tethered only. Every time it restarts, you need to run redsn0w to boot it again. This can be very troublesome especially when you’re working or studying. You [...]







