iPhone 3g and iPhone 3gs Baseband 6.15.00 downgrade using Redsnow 0.9.14b2

The iPhone Dev team has released an updated version of Redsnow that helps to improve iPhone 3gs 6.15.00 baseband downgrade. This update adds the DFU IPSW method into the tool. For those who aren’t aware, Redsnow allows iPhone 3g and iPhone 3gs users with the iPad baseband 6.15.00 to downgrade to 5.13.04 baseband that can be unlocked and with the gps feature.

For those who were unsuccessful the first time they’ve tried downgrading their iPhone’s baseband, should now be able to make it work using the latest version of the Redsnow tool which can be found here. Take note that you should be able to downgrade your baseband provided that your iPhone qualifies for the downgrade.

The latest version of Redsn0w 0.9.14b2 covers three different types of NOR chips in the iPhone 3G and 3GS and the instructions on how to downgrade the baseband are similar to the last release which can be found here. A new DFU IPSW method has also been added to this release of Redsn0w. This method helps those who have an iPhone with either a broken or intermittent home button to enter DFU mode with a IPSW file. This new feature can be accessed in Redsn0w by going to Extras -> Even More -> DFU IPW.