There is indeed an updated version of the software and they have raised the idle to 900 rpm's.
That is directly from my Dinan rep. Not from a dealer.
If your car does not idle at 900 rpm's, you do not have the updated software.
I dont know what else to tell you other than to call Dinan directly and have them straighten it out with your dealer.
Its worth the trouble. I am continually blown away by the new software.