User pattywatty over on the SmartphoneThoughts Forums is reporting some more info from the folks at www.c500-unlock.com about people having problems unlocking their AT&T Wireless Audiovox SMT5600 Smartphones:
“I finally received response from the folks at unlock-c500. They said at this time it is unsafe to unlock as they have had to downgrade one they recently tried. I don’t know exactly what that means. They said I would need at least a 64Mb minisd card and card reader to read the firmware in order to help them work faster. Again, I am not sure what that means. I am now a little tempted to just cancel this phone and buy the unlocked version through expansys-usa.”
The unlock process involves getting an IMEI-specific unlock file, and using a firmware updater program to unlock the phone. In my initial email correspondence with c500-unlock, they claimed that they wouldn’t have any problem unlocking the phone, since it was based on the HTC Typhoon/SPV C500. However, people who have tried this unlock method have reported that the procedure left their new phone unbootable, and basically dead in the water.
It’s always risky dealing with firmware-level changes like this, and of course, the buyer should beware. Keep an eye on the thread linked above for updates on the situation, and I’ll definitely post here when I learn of a safe way to unlock this phone.