iH8Sn0w has released a new version of Sn0wBreeze for developers to jailbreak iOS 5.0b1.
sn0wbreeze v2.8 BETA 3 Release Notes: ======================== sn0wbreeze v2.8 BETA 3: ======================== * Now jailbreaks iOS 5 (beta 2) * Intended for developers ONLY! * Does not Hacktivate or add afc2 in this release to prevent piracy. * iPhone 3GS old bootrom users have an untethered boot. * Now only 15MB :) ======================== Supported Devices: ======================== * iPhone 3GS (old bootrom) [UNTETHERED] * iPhone 3GS (new bootrom) [TETHERED] * iPhone 4 GSM [TETHERED] * iPhone 4 CDMA [TETHERED] * iPod Touch 3G [TETHERED] * iPod Touch 4 [TETHERED] * iPad 1G [TETHERED] ======================== Now available at: http://ih8sn0w.com/sb28b3 ========================
Sn0wBreeze is a Windows application that creates a custom ipsw similar to PwnageTool. It will not update your baseband; however, UltraSn0w has not yet been updated for iOS 5.
Mac developers needing to jailbreak can use RedSn0w.