I had my iPhone unlocked by AT&T. I was wondering if it was possible now to use redSn0w or so to install cydia without it removing the AT&T unlock. I can't use ultrasn0w because it has the baseband of 05.16.05 and rather not convert it to the iPad's baseband. So would using redsn0w to install cydia remove the unlock that came with the AT&T restore?