Here you can find the previous version of the Dig Deep MK3 in case you should have troubles with latest one.
When downgrading to an older version it’s better to dowsngrade the firmware audio algorithm as well. Before doing so it’s suggested to erase any settings from Upgrade menu -> Erase Settings. After erasing is complete unplug pedal from USB and reconnect it while holding SHIFT button down, start the editor, go to Connection->Scan and Link and follow the instructions.
MacOS version works both for Intel and ARM cpu.