As for the radio, switching US - radio to operate on odd frequencies (US) vs both (ECE), this isn't a car program. You do this on the head unit itself, a 30 second job.

There is a Youtube video of a guy doing this on an E46, you have (from memory) about 5 choices on our radio (US, Canada, ECE, Japan & something else).


If you need more - let me know. Happy to help,.