Does anyone know if there are any software updates for the iDrive to help it function faster?

Just dropped off my wife's car to perform an air conditioning service. They gave me a 528 loaner that has the newer iDrive hardware (new controller with buttons). But it ran what appeared to be the old iDrive software (the same one from my X5). This car did not have navigation nor a backup camera.

The software ran FAST! No lag in booting up. No lag when switching from one menu item to another or from scrolling through my phone list/music list. I'm sure it was probably the hardware that accounted for the performance increase. But maybe there is some kind of update out there that might have fixed a common complaint.