I took a crack at it and have the WeatherTech frequencies updated from RacingRadio's PDF for this year, and successfully loaded it to my BC125AT.
However, it doesn't seem I have permissions on this site yet (I just registered) to upload my own attachments? Trying to Add New Media tells me I don't have permission to do that, and I don't see anywhere else I can upload the .bc125at_ss file to let me post it in a thread. 🤷‍♂️ Would be happy to provide the file if I can!