To sonos management -  i cannot now play my music library through sonos (the only reason i have a sonos speaker system)   You wiped it from the sonos controller with an update and now i get error 913 when i try to restore.

Unbelievable shoddy work.

please come onto this community blog and advise me and everybody else in this position when you will correct this monumental cockup.

Alternatively expect a massive exodus of Sonos users.