@David-TP
Hi David
All settings were lost i.e. network names, passwords, names of kids for parental control, names of M5 units etc. The only remaining info was the administrator names and bizarrely, the PW for the guest network.
The solution was to do a reset, add the M5 units, create new primary & guest networks & re-install the setings.
Seems to be fine now, although guest network seems a bit iffy
Don't know what the original firmware version was unfortunately. That was a good while ago! Previous firmware would have been the previous release, as I always keep it updated. Curently on 1.7.1 Build 20230608 Rel. 74023
Cheers
Mike