Upgrade Radio ROM?

[CMeys]

I am using Colonels 3.5 ROM. I realize though that since I had never flashed to the Sprint 2.2 AKU, I've never update my Radio ROM from the original (it shows as 1.12.00 in device information).

Should I/could I update that? Can I extract just the radion ROM from the office AKU 2.2 (it isn't clear on the UTStarcom site which one is 2.2 -- anyone have a direct link?) and flash that?

Advice is appreciated. Thanks.