Weird...kind of sorcery...
The OP's radio version seems the old one from regular Roms.
My frankenbuild ( Omnia7 forced updates through Zune commands) looks like this:
OS: 7720.68 (7740 only patches two outlook issues- BUT broke the marketplace locales for me)
FW rev no:222.214.171.124
Radio software: 2126.96.36.199
OP has radio 2188.8.131.52
What are the regular values from an UNTOUCHED ATT/Rogers rom?
It seems that these values are standard Rogers update values...so all the Mambo Jumbo FW flashing is reverted...