I just bought a used X3 off ebay from a guy who had it on an 2010 f150. He said he only had it on there for a couple of months and then sold the truck.

My question is...should I do a firmware update on it before I put it on my 06?

Another question is....how often should it be updated? What do the updates do..if anything...

I had an Edge Evo on my 99 and never updated it, so I was just kinda curious as to if and why one would need to be updated?