OK so I have an unlocked 3gs (old bootrom) and its on 4.0 and the base band is 04.26.08 I was trying to see if there is a way for me to update my base band without losing my unlock. I have heard that when you have the older base band you can experiance problems. everything have been fine until just recently Ive been losing signal in places that i normaly would have great service and I would also like to update to the latest software that I can. Can I update to 4.1 and still unlock it. If so what is the best way to go at it.