In this iPhone Guide, you will learn how to downgrade Baseband 2.30 to 2.28 for your iPhone 3Gs having Bootloader 5.8. After downgrading the Baseband you will be able to Unlock iPhone 3G with YellowSn0w. Gurus are working on a similar exploit for higher Bootloader versions. Prerequisites: Make sure your iPhone Bootloader version is 5.8. […]