I just accepted the invitation to upgrade to version 2.878 (on raspberry pi4) and my system became inaccessible. I powered down, rebooted, heard the welcome noise but the system was still inaccessible. Connected via ethernet cable, found the new IP address from the router’s administrative interface and re-enabled the wireless connection by hand. The NFS share containing my music was still not mounted though; had to log in by ssh and remount it by hand with : sudo mount -a. All seems well now but this was not an enjoyable experience.
Thanks for the warning!
It’s being investigated in Volumio 2.878 not running on Raspberry PI Zero, closing this in favour of that post