I agree FJames.
I gave up trying to sync (I only sync for firmware upgrades as I prefer to side load my books) several days ago when it became obvious that there were some problems.
Now when I'm not reading my perfectly functioning Kobo I occasionally check on MR to see what's happening.
When the update becomes available again I will give it a few days and then I will upgrade if I think it will improve my Kobo - if not I'll just keep reading.