Unlock iPhone On 4.2.1 & 4.2 Firmware - iPhone 3G & 3GS - Using Ultrasn0w + Redsn0w 0.9.6b5
How to unlock iPhone 3G/3GS on iOS 4.2.1 firmware or 4.2 firmware using ultrasn0w and Redsn0w 0.9.6b5 Read the video description!
Redsn0w 0.9.6b5 Download Link:
iPhone 3G/3GS firmware downloads: http://www.felixbruns.de/iPod/firmware/
This unlock will also work on iOS 4.1 firmware as well.
This redsn0w jailbreak/unlock is untethered for the iPhone 3GS older bootrom!