I'm pretty sure that IGR for M7 ONLY works with the evox dash. If you want to use an alternate dash, and still have IGR, you may need to look at x2 4981, M8, or x2 5035. Also, if you want to enable the G: partition, you'll need to edit the M7 bios with xbtool. Xbtool also works with x2 4981, but if you want to go with M8, you'll need to use evtool. I believe to do the same with x2 5035, you need x2ool.
