Comprehensive collection of .senc files

Is there a repository for finding older .senc files? I have a number of class three medical customers (that means no changes to the pack) that use older firmware revisions of various fuel gauges, and the .senc files don't seem to be available for older revisions through the product site. I've had some issues where I'd like to try re-flashing the firmware, but I can't get a copy of the older .senc. Please help.