@ayenack you're welcome.
The necessary first step to port UT is to port it to Halium, and there's some WIP on some Motorola models as you can see here https://github.com/Halium/projectmanagement/issues?utf8=✓&q=is%3Aissue+is%3Aopen+motorola but if you want a UT device now, yes it's better to buy a supported device.