A few minutes ago i0n1c and MuscleNerd started a discussion on Twitter related to the baseband of the iPad tablet from the iPhone 3GS, all related to the eventual impossibility of downgrading. MuscleNerd says that downgrading the iPad baseband is possible on the iPhone 3GS because this device doesn't use bbtickets, but it's hard to believe that a solution will ever be released that allows you to do this. MuscleNerd says that this baseband is used to decode iPhone 3GS terminals and that's probably why the Dev Team never bothered to make a downgrade solution, because that downgrade wouldn't get you to a decodable baseband.
In conclusion, even if you could downgrade the iPad baseband on the iPhone 3GS and use the GPS again, you will not be able to decode the device through software. This downgrade method would have been great when SAM was working because anyone could have decoded their terminal and used GPS again without problems, but the Dev Team was in no rush to do anything to help owners of 3GSs.
