I forgot you were using SaberTrio, sorry about that. The latest stable version is 7.15, the latest beta is 8.4x (for the official OS). I know that SaberTrio have added some of their files to config, display & props folders, maybe other places too but I don’t know if they modified some of the “regular” ProffieOS files as well but most likely they did add code to ProffieOS.ino
There is this opensource sofware (for Mac, PC, Linux): https://meld.app/
that can help compare folders content and files content witch might help you import their modifications into ProffieOS8.4x (I call it 8.4x because since the latest 8.4 zip release, there has been few more minor improvements)
You can find 8.4 zip here:
and 8.4x from Github Master (linked above)
Edit: I tried but failed to use/import their stuff to my local ProffieOS because my coding knowledge is limited. But I would love to see you succeed.