We warned who use ultrasn0w to unlock their devices, to stay awy from Redsn0w, and wait for PwnageTool to support 4.1, that is because to use redsn0w at 4.1, you need to already have updated to official 4.1 from Apple,if you do that you lose the ultrasn0w unlock, possible forever. The release redsn0w is only available for Mac, as the Windows version needs further testing.
- iPhone 3G and iPod touch 2G only (for now)
- Mac OS X x86 only (for now)
- 4.1 or 4.2 firmware from Appl.