Yes don’t worry I’m technical for a job so I’d already tried a factory reset, then did the same and erased all data. Pressed both buttons for a minute, tried different chargers, plugged into computer, sync’d with Garmin express, tried updating using that. Turned off all wrist based sensors and restarted, tried installing software through GarminIQ to see if that could trigger anything but sadly not.
It’s on software version 8.3 and it seems lots have had issues with this and getting to 8.4, seemingly it’s 8.4 that wants to install but just can’t. I’d be happy to try update it manually myself or rollback the firmware or even root into it and try trigger something but they’re pretty locked down.