you can't unlock 4.10 baseband =[ However, you can (and certainly recommended) use snowbreeze to make a custom firmware to update yourself to 5.0.1 keeping your baseband, and jailbreaking on the latest firmware at the same time. However if you need the unlock, stay on 4.3.5 with snowbreeze, GeveySIM is the only unlocking solution as of now, and is pretty unreliable =\ --> geveysim.org