[cine1952]

I am in Canada with F/W version 4.0.7523; I use the localized french_CA version.

My problem was that unchecking the "Synchronisation et mises a jour" was useless. I would do it, exit the menu and when I came back to see it was back to on.

I added the following line of code freekobo suggested in msg no 212:

>>> In your \.kobo\Kobo\Kobo eReader.conf file under [ApplicationPreferences]
does PeriodicAutoSync=false ?

So I added:
PeriodicAutoSync=false
at the end of the [ApplicationPreferences] section.

Now I am a happy camper. The option remains OFF when I set it OFF.