My suggestions:
-
Try to download again
OSMC November 2020 2020.11-1
flash it on a new USB/SD Card, don’t use preseeding and reinstall it on the Vero. This would exclude any possible issue happened when you flashed it. -
Install
OSMC December 2021 2021.12-1
on it, if wifi is working then you could:
a. Try to flashOSMC October 2020 2020.10-1
to see if that works
b. Stay with that version and manually restore the files from your previous install (everything other than guisettings.xml should work and then trigger a migration by deleting the database files
c. Upgrade your other Vero to December 2021 OTA and then backup/restore