A few weeks back, we wrote a step-by-step iPhone guide on How to Downgrade iPhone 3G (2.2.1) Baseband 2.30 to 2.28 for Unlock. That guide let you downgrade iPhone 3G baseband 2.30 to 2.28. But there are two limitation to that guide. Your iPhone 3G Bootloader version must be 5.08. You need to go through […]