Dev-Team has just released RedSn0w 0.9.9b8 to jailbreak iOS 5.0.1 beta. In this new version you don’t have to point RedSn0w 0.9.9b8 to the official iOS 5 firmware file. RedSn0w 0.9.9b8 will natively recognize the iOS 5.0.1 beta firmware.
Update #16: redsn0w version 0.9.9b8 will natively recognize the 5.0.1 beta that Apple let developers start testing this week (so you don’t have to play the “point at 5.0 IPSW” trick). Because the IPSW isn’t public, you’ll still need to provide it once to redsn0w (at which point it will cache all the important pieces so you don’t need to select it again).
For those iPhone 3GS and iPhone 4 users who preserve their baseband, the Mac version can also produce the NO_BB_* custom IPSWs for 5.0.1. (But please note that ultrasn0w doesn’t get updated for betas like this.)
Which devices can be tethered jailbreak with RedSn0w 0.9.9b8:
- iPhone 3GS (new bootrom)
- iPhone 4 (GSM)
- iPhone 4 (CDMA)
- iPod Touch 3g
- iPod Touch 4g
- iPad 1
iPhone 3GS (old bootrom) can be untethered jailbreak.
Currently 0.9.9b8 still not support iPad 2 and iPhone 4S.