I just bought an iphone 3GS with BB 06.15.00, which I obviously want to downgrade. The latest version of Redsn0w (thanks to the awesome Mr. Musclenerd) is able to do this, but it doesn't work on all 3GS's due to a slight hardware difference on some models. There's apparently going to be an update to fix this soon, but I'd like to have GPS working asap. I was wondering whether it is safe to go ahead and try the current version, or will I damage something if my phone turns out to be one of the incompatible ones? In other words, can I just try it and shrug my shoulders if it doesn't work, or will I end up with a corrupted basband?