Error 1016 when updating Sonos
Error 1016 occurs when one or more Sonos products loses connection to the update server during a firmware update. The error screen will indicate which of your Sonos products is experiencing the error. Below are some common steps you can take to resolve this error.
Reboot your Sonos products
Reboot all of your Sonos products. Once you have rebooted all of your Sonos products, make sure they all show up in the Sonos app and try the update again.
Move closer to your WiFi router
If possible, move the Sonos product experiencing the error closer to the router and try the update again.
Temporarily wire a product
If possible, temporarily wire the affected Sonos product to your router using an Ethernet cable, and retry the update in the Sonos app. If the update is successful, unplug the product from your router and return it to its original location.