So after factory reset, my Jolla C is back to 2.0.2.43, and readily sees the 2.1.1.23 update (I thought there would be intermediate updates). However, it can't seem to download the update. I've tried more than 8 or 10 times now, I initiated the download with the pulley menu and wait for tens of minutes while the Jolla is busy trying to download (pulley is deactivated), but at some point the phone stopped trying and I can use the pulley menu again to download. There is no download progress visible in the update banner. I'm on wifi with a pretty good internet connexion.

Also, restoring a backup made before I bricked my device two days ago fails.