@alexander-tolstykh that's always a bad idea to unplug the power without shutting it down, like any operating system, you may corrupt your data. And yes, because wifi management has been reviewed to allow network share over wifi, now you must shutdown your system properly to keep your wifi settings.

@Substring Ok but the Recalbox still does detect that there is an update available, so it does seem to connect to internet. If It can't download by not being able to connect to archive.recalbox.com that's ok I can download the updates manually.

What I really need is for the Kodi installation to be able to connect to the internet, the one coming with Recalbox. You mentioned a solution by @Pepe, do you have a link please ?