All but iPhone 4S and iPad 2
who want Cydia and want the ability to install apps which were not approved by Apple puritans need to have their devices jailbroken, which was proving a pain for the latest toys.
For a while now, it was possible to jailbreak iPhones with iOS 5, but only via a tethered jailbreak. What this meant was that the device would be jailbroken until the first restart or shut down. With every new boot, you would have to connect your phone computer and jailbreak it again.
This is now over, as an untethered jailbreak is out, courtesy of redsn0w 0.9.10b2 for Windows or Mac OS. The procedure is rather simple and there are plenty of guides all over the net, so we won’t go into details.
Unfortunately, the new untethered jailbreak only works for non-A5 devices, so iPhone 4S and iPad 2 users will have to wait. Still, a lot people didn’t go for iPhone 4 Siri edition, they stuck with their iPhone 4 devices, and they can enjoy it.
You can grab it here