Here is Google Drive link that contains many of the current and previous firmware files for Frsky Modules, Receivers, and Transmitters.
In the event that Frsky continues to remove ACCST 1.X compatible firmware, you can continue to source it from this Google Drive link.
https://drive.google.com/drive/folders/1ugj1DjWdqbnE25aDwyOYJDD-Nmr0wfYg
