Oooh this is more of the good-good.
Mazda CMU Hacks
Index for Infotainment Project
What is it?
Infotainment tweaks are modifications to the code of the little computer smacked onto your dash. Applicable only to 2016 cars, these tweaks allow a user to do a variety of things from change colors, all the way to playing high-res videos on their infotainment screen.
There is a lot of custom functionality offered that can be found above. The starter kit is the AIO tweaks setup, that gives a user everything they need for the good stuff. Custom backgrounds, color, warning removing, speed limit removal, etc. All kinds of cool stuff. All it costs is whatever your local store charges for USB sticks. Everything is constantly under development. This is a huge project constantly being worked on by different people, yet is very easy to use and understand. It allows your 6 to stand out from the rest with very unique details.
What's not nice?
If you screw up, you'll brick your system into a boot loop. Very difficult to recover from, and easily a thousand dollar+ repair. Generally, this only happens with beta and unstable versions of the Mazda platform and unstable versions of the tweaks. Running something like AIO will not give issue. In addition, some of the apps are a little finicky to use. They work, but they're strange. Using the tweaks can kill your navi voice as well. You'll have to turn that off. Development on some apps takes a while, but again, these people do it for free. Android Auto will break your shit. Some people use it safely, but it's just too risky to justify.
Ease of install
It varies. For AIO and basic tweaks, it's a matter of formatting a USB stick, installing, and sticking it in your car and waiting. Not very difficult, and one doesn't have to be software-inclined. Other tweaks will require more coding and language knowledge, but those are generally in development or risky.
Overall, I recommend these tweaks. They're free/cheap, and help make your car "yours," while adding some neat functionality.