@d0ugmac1 Thank you for your suggestion! I tried: went back to the old one, updated one of the APs, saved the config file, stopped, started the new controller, uploaded the new config file. But it...

@d0ugmac1 Hello! I got around to do the update, starting from Raspi updating. (By the way, I said mine was version 10, but it was wrong: it's 11. I kept this version, didn't burn a new card) Now,...

Ah, OK! So it was referring to the lines you wrote above:)

@d0ugmac1 wow, thanks a lot for detailed answers !!! I really appreciate it a lot!. As for a backup for raspi, I do have one for each Raspi (one for Omada, one for Unifi). I am afraid of accidental...

@d0ugmac1 and Virgo thank you for your replies! I think the link from Virgo is yet another method, not on a container like I have mine. I guess I will stick with it. @d0ugmac1 I guess you are right...

@Virgo @d0ugmac1 thank you very much for your reply! I will have to wait till our tenants take off to update the controller, then.... perhaps after Easter. As for updating of the controller, my...