How do I find the version of my MMCS?
Hold SET+NAVI for a few seconds, then touch Version Indication. Take note on EM or UM Versions and also the version number.
What if the version listed is not the one I have?
If you have version 00.30.99 then it will not work with version 00.30.94, but if you have something earlier than the listed download version, then it will update your current version and DVD in Motion will work. A generic patch is in the works. However, some people were able to apply the patch but it downgraded their MMCS. It might work, so give it a try if you don't mind downgrading.
Does this work for AUX in Motion too?
No. However, it's on the to-do list.
What is an ISO and RAR file?
An ISO file is an image and is ready to be burned to a CD as an image. A RAR file needs to be extracted with WINRAR or similar program to produce the ISO file. Usually RAR files download faster because they are compressed.