The iPhone-Dev team today released Redsn0w 0.9.6 b5, a carrier unlock and hactivation tool for iPhone 3G and iPhone 3G S with iOS 4.2.1. Redsn0w 0.9.6 b5 is the PwnageTool 4.1.3 alternative for Windows. It can be use to upgrade the modem firmware version in iPhone 3G and iPhone 3 GS from 05.14.02, 05.15.04 or higher to the unlock supported baseband 06.15.00. Here we use iPad OS 3.2.2 with Redsn0w 0.9.6 b5 to update the baseband of the iPhone 3G or iPhone 3GS to 06.15.00. After the baseband upgrade, we can use Ultrasn0w 1.2 to unlock the device.
Tags: iOS 4.2.1, iPhone 3G, iPhone 3G S, PwnageTool 4.1.3, Redsn0w 0.9.6 b5, unlock iPhone, unlock iPhone 3G, Unlock iPhone 3G S

