The iPhone Dev-Team released a developer only version of redsn0w 0.9.13dev3 to tethered jailbreak of iOS 6 beta 3.
The following limera1n-able devices are supported:
- iPod touch 4G
- iPhone4 (GSM)
- iPhone4 (CDMA)
The “dev3” version covers today’s 6.0beta3 release (and also adds explicit support for 6.0beta2). Please point redsn0w at the 6.0b3 IPSW in order to jailbreak beta3 and boot tethered. ** You must use “Select IPSW” to point redsn0w at the beta3 IPSW before every tethered “Just boot” **