2005 X5 4.4i

I had an old Operating System CD V27 that had a cool startup pic on it. My X went into the dealer and they upgraded my NAV OS. I was up to 4-1/71.

I just stuck that cool V27 CD back in and changed my version down to 4-1/70 and now I have the cool X5World pic again. Have I broken anything by going down 1 rev (from 71 to 70)?

CG