[Q] Cyanogenmod Compatibility topic

I am attempting to root my old XT907 before I give it to a friend and I am somewhat confused on which software versions Cyanogenmod works with. The Razr M I have is at system version 98.16.3 with the option to upgrade to 98.30.1. The build number is 9.8.1Q-78-1. The Cyanogenmod wiki says that Cyanogenmod can only be accomplished on firmware versions prior to 9.20.1, but there are also articles saying that the phone can not be rooted on Android 4.1.2 (which I currently have). Should I update to 98.30.1 or stay at the current version?