After the last software upgrade :
it run normally for a récent sonos move 0n a lan with the library on a usb key attached to router ax55 tplink. but it not possible to update a play list Sonos with the iOS phone !!!
it is impossible to run with a old Sonos play 3 connected with the library on a key attached to netgear wndr 4300 !!!
why !!