Roll Back Firmware

Yes there is. It's actually the same procedure as for other Garmin devices to revert from a beta version to the latest released version, for example for Fenix 8, see the beta forums.

You need to have the GUPDATE.GSP file of the firmware version you want to roll back to. If you have the file, copy it to the GARMIN folder on the internal storage of the device. Also copy an empty file called FORCE.TMP to the same folder. On boot of the device, it will prompt you to install the firmware.

Note that all settings will be reset to factory defaults.

EDIT: do this at your own risk, I only provide the same instructions as Garmin!