I have an Alltel phone that I need to put a Sprint Radio 1.04.01.09.21 Radio Rom on. I can flash the radio, but when I flash that radio (which is an early sprint radio) the phone will reboot. If I flash a different sprint radio, it will work fine, but I need that earlier sprint radio. So I tried to flash a compatible sprint RUU, and got a "customer id error". Is there any combination of gymnastics that I can do to get either the sprint ruu flashed on the alltel, or somehow get the 1.04.01.09.21 radio to work? I suspect that radio is not supported with 2.1 as it was originally on 1.5, but I don't know for sure. Any ideas?