Im not an expert or a 3g user so someone else will probably give a better answer, but the extra 3g/gps hardware has some extra baseband firmware in it and when its updated along with the normal iOS it creates some kind of conflict and prevents downgrading.
I thought you could downgrade if the baseband wasnt changed between firmwares though?
Obviously I dont really know, hehe.
I thought you could downgrade if the baseband wasnt changed between firmwares though?
Obviously I dont really know, hehe.