Just a quick heads-up: the iPhone DevTeam has updated redsn0w to v0.9.11b4 which completes the tethered JB support for 5.1.1 on A4 devices and earlier, including proper “Stitching” and “Custom” creation of NO_BB IPSWs.
Download:
- redsn0w 0.9.11b4 for OS X
- redsn0w 0.9.11b4 for Windows (be sure to run in Administrator mode)