Even though, when iOS betas are released by Apple, jailbreaking isn’t necessarily number one on users’ agendas, many of us like to have the option of installing some of the many great tweaks offered by the community. Thanks to the continual endeavors of the iPhone Dev Team, those having just updated to iOS 6 beta 3 can jailbreak their device using the just released version of Redsn0w.
The jailbreak for the third beta follows the same sequence as those of the first two betas in that it is tethered boot only and is limited to A4 based devices namely the iPhone 4, iPhone 3GS and iPod touch 4G. As a registered developer, I trust most of you know what this entails, but for the sake of clarification, it basically means whenever your iOS 6 device is switched off or rebooted, you’ll need to reconnect to your PC or Mac in order to get it up and running once again. Failure to do so will basically render your device useless, so is not advised on your "daily runner."
As with the second beta, this jailbreak will not – unlike normal jailbreaks for official iOS releases – install Cydia, since the installation of the jailbreaker’s sanctuary is not yet supported on developer releases of iOS 6. Nevertheless, you will have root access, meaning you can install .deb files the slightly longer way using afc2 or SSH, so no Cydia doesn’t necessarily mean no tweaks.
If you wish to jailbreak your device using the Dev Team’s Redsn0w utility, please check back to this link for our complete and detailed step-by-step tutorial, and point Redsn0w towards iOS 6 beta 3 from the Extras menu before going ahead. As mentioned before, it is tethered and limited to A4 devices only, and combined with the lack of Cydia, it’s not much compared with the almighty untethered jailbreaks we’ve become accustomed to. Still, if you’re happy to run a beta, I suspect tethered booting every now and again isn’t too much hassle.
The final version of iOS 6 is expected to arrive sometime in October this year, alongside a new iPhone and, potentially, a smaller iPad if we’re lucky enough in the hardware department.
Source: Redmondpie
