How To Downgrade 6.15.00 Baseband On iPhone 3G 5.08 Bootloader

Why Downgrade? Well 5.13.04 Has NO GPS Or iTunes Restore Problems And Is A More Stable Unlock. 

NEW 5.0.1 UNTETHERED Jailbreak HERE!: http://www.youtube.com/watch?v=wBGksHapsxA

NEW 5.0.1 Unlock HERE: http://www.youtube.com/watch?v=S0rHuX_oW1A

Download The Cert File HERE:http://www.filefactory.com/file/b5523h5/n/ICE2-06.15.00.cert

Learn How To SSH Here: http://www.youtube.com/watch?v=KTrS3aFMsH8

Go To Var/Stash/Applications/Fuszzyband.app And Copy The Cert File There.

Your Unlock Will Still Be Valid So Don't Panic :D

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Yes This does work on any 3G Firmware Including: 4.2.1, 4.2, 4.1, 4.0.2, 4.0.1, 4.0, 3.2.2, 3.2.1, 3.2, 3.1.3, 3.1.2, 3.1, 3.0.1, 3.0