I always get confused by the firmware, bootrom, etc. in this thread so I figuered I should just ask. I'm using an UNLOCKED iphone 2G on T-Mo for now. A friend of mine is going to sell me his 3GS so he can upgrade to iPhone4. He is all up to date on AT&T with iOS4 and everything just like he should be all updated. When will I be able to unlock the 3GS for use on T-Mo? Is it already possible or do I have to wait for the redsnOw update? There is no hurry at all I just want to be sure it will be possible! Thanks!