Will a revision M 9W7 BT unit work with an early RNS510 (revision B) in my R36?

[whichonetoget]

I've found one on ebay that I am keen to snap up. It's model number 7P6 035 730 M. Will this work with my revision B RNS510 running firmware version 5238?

[kamold]

Yes it will work with the rns no problem.
Only potential issue will be with steering wheel buttons. I think it's new enough that it will be a 9zz or 9za so should work.
Earlier 9w7 don't work the 8 button wheel so you can't control it and therefore can't pair your phone.