How to jailbreak iOS6 beta 2 with Redsn0w 0.9.13dev2
Today, Apple released iOS6 beta 2 to developers. For those developers who wish to update their 3rd party apps and tweaks to be compatible with iOS6 once it is released publicly, this tutorial will walk you through jailbreaking iOS6 beta 2 with Redsn0w. Since Redsn0w has not yet been updated to support the new beta release, you will need to use Redsn0w 0.9.13dev2 which was released to perform a tethered jailbreak on beta 1 of iOS6. You will also need an iOS6 beta 1 firmware file since Redsn0w does not recognize the beta 2 firmware yet.
It should also be noted that this is a tethered jailbreak(as all the iOS6 beta jailbreaks will be).
Step 1: Install iOS6 beta 2 on your device. If you already had iOS6 beta 1 installed and you were not jailbroken, you can perform the update OTA by going to settings>general>software update. If you were jailbroken on iOS6 beta 1 or you are not yet running iOS6, you will have to restore the full firmware file you downloaded from the developer portal through iTunes.
Step 2: Download and launch Redsn0w 0.9.13dev2
Step 3: Click on "Extras" then click "Select IPSW" and choose your beta 1 firmware file. If you attempt to use a beta 2 firmware file you will get an error that says that the firmware is not supported.
Step 4: Now that you have specified your iOS6 beta 1 IPSW file, click back and hit Jailbreak. At this time put your device into DFU mode per the on-screen instructions.
Step 5: Once you get to the options screen make sure you have a checkmark in the box that says "Install SSH." Since Cydia is not yet compatible with iOS6, SSH is your only method of installing 3rd party tweaks.
Step 6: The jailbreak process will automate itself for the rest of the time, it takes less time than a typical jailbreak since Cydia is not being installed. Once it is done, your device will reboot and you will be jailbroken.
Step 7: Now that you are jailbroken, simply select your 6.0 beta 1 IPSW in extras again and then hit "Just Boot" to boot tethered. Once your device reboots again, you will be able to SSH into the device and install your tweaks.
Any comments or questions? Please feel free to post below!