Motorola

I bought an unlocked razr from cingular for my t-mobile service. About a week after I received it T-mobile came out with the razr. Not a huge deal.... except for the t-mobile version runs more smoothly and also has video recording. I've come to find out that the only changes were done to the firmware. The hardware is completely the same. I've been trying to find the flash software and t-mobile version of the firmware with no luck. Can anyone help me?

Thanks
Seedyburner