Redsn0w 0.9.15b3 being released by iPhone dev Team which fixes the “error 2601″ that Windows users were getting when using the Restore button along with fixing iTunes error 14 for stitched files on Windows.
Redsn0w 0.9.15b3 also enables iPad 4 and iPad Mini owners to save iOS 6.0 SHSH blobs to Cydia. iPhone Dev team will also be releasing a new version of Ultrasn0w tomorrow for iOS 6. Currently, iPhone 3GS (old bootrom) have untethered iOS 6.0 jailbreak hence Ultrasn0w unlock will be useful for 3GS owners.
Ultrasn0w for iOS 6 will be compatible with older basebands such as baseband 01.59.00 for iPhone 4.
You can go through the tutorial to jailbreak iOS 6 and also Re-Restore iPhone 4S, iPad 3, iPad 2 Using Redsn0w.
Download Redsn0w 0.9.15b3
To save SHSH blobs for iPad Mini and iPad 4 running on iOS 6-
Download iOS 6 firmware for iPad Mini/iPad 4.
Launch Redsn0w 0.9.15 b3 on your computer.
Go to Extras >> SHSH Blobs >> click on “New”.
Point Redsn0w at 6.0 IPSW to save.