Sad to say, I do have a Mastermind TCU. I found a discussion that confirms what you imply, that BLEvo is not compatible with Mastermind TCU, and it probably never will be:As long
As long as your Creo is non-Mastermind TCU version, BLEvo is far superior to the MC.
Dear BLEvo riders, Writing this message to all of you is hard and painful for me. As most of you know, I bought my first Levo in September 2017. After having previously built an app that connected to a Bluetooth device (for my “real” job), I decided to develop the BLEvo app as a hobby. I...
Apparently the reason is encryptions added to the Bluetooth protocol due to regulatory concerns. I can sort of understand that, but the fact that Spec's own limited app doesn't even work as advertised just adds insult to the injury of losing BLEvo.