I just installed the 2017 MT module in my 2013 MT BRZ.
I figured out the lock, it slides to the side where the wiring comes out of the connector, backshell comes off by prying 2 tabs on the backshell itself.
I used the same repin pattern as @
solidsnake11, pink from 27 to 9, white from 32 to 8.
Upon startup, no codes but the ABS light was on for about a mile. After that everything appears normal. No hill start, VSC sport mode activates like normal (immediately upon pressing). If this is what track mode feels like it’s a very subtle difference, at least on the street. I couldn’t get crazy on the backroads but the limit feels similar as before. Maybe the difference will show at autocross. Keep in mind I haven’t driven a 2017+ to compare.