Dev-Team Working on Downgrade Baseband 06.15.00 to 05.13.04

MuscleNerd, in tweet, hints that they are working on downgrading Baseband 06.15.00 to 05.13.04. In a reply to one of his followers, Musclenerd says that they are working on downgrade iPhone 3GS baseband 06.15.00 to 05.13.04 rather than an unlock for baseband 06.15.02, 05.14.02, or 05.15.04.

GPS Not Working on Baseband 06.15.00? [Dev-Team’s Response]

After updating to baseband 06.15.00 with RedSn0w or PwnageTool and then unlocking with UltraSn0w, many people started reporting about GPS not working and battery drain problems. We have already shared a temporary fix for battery drain issue. About the GPS issue on baseband 06.15.00, checkout the Dev-Team’s comments after the jump…