In fact, I have tried to hack the nv_data.bin but seems that it is not the same as galaxy SII and galaxy S.
Although you will get unlocked (generic IMEI) when removed those files,
I highly recommand that you have to backup them in a very safe place. Otherwise if you encounter any problems, you have to sent back to AT&T / Rogers.
Sent from my SAMSUNG-SGH-I927R using XDA
Samsung Captivate Glide
Palm Pre Plus
T-mobile G1 | HTC Dream White