Sony has only released the PS3 3.21 firmware update a few days ago, and Geohot (the popular hacker) has already managed to hack the firmware, reinstating the removed “OtherOS” feature, which allows you to install another OS (duh). The hack can be done without having to crack open your PS3, and all you have to do is restore a custom generated PUP file. There is even a slim possibility that this hack might be able to get the “OtherOS” feature to work on the PS3 Slim, but you’ll have to cross your fingers and wait and see. There isn’t an actual release date on this hack yet, but we’ll be keeping an eye on it. Check out a video demonstrating it.