redsn0w Updated To v0.9.11b4 With iOS 5.1.1 Tethered Jailbreak Support For A4 Devices

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)    

HOW TO: Unlock iOS 4.0 GM On iPhone 3GS With Baseband 5.11.7 Using Blacksn0w (Unofficial)

A few days ago we told you about an unofficial port of Blacksn0w to iOS 4.0. We also showed you how you can create a custom iOS 4.0 with unofficial PwnageTool bundles. If you are running iOS 4.0 GM on your 3Gs but still on 3.1.2 baseband ( 5.11.7 ), here is a tutorial on how to unlock it.