Here’s a list of the firmware downloads:
https://forum.snapmaker.com/t/snapmaker-artisan-firmware-updates-and-downloads/29975
I read somewhere that rolling back to older firmware is to be done using USB and from the console, not over wifi…
Hope this helps.
(The latest version is not what you mentioned. That latest is v 2.3.1. Are you sure you updated to the latest? Are you talking about the Arrtisan or is it another machine?)