User Guide Part 2

Sonos Digital Music System User Guide5-28
Controller software updates
In the event that your Controller’s software version gets out of sync from the rest of
your Sonos Digital Music System components, you will see the following message
displayed on your Controller screen the next time you use it:
This Controller will be unavailable for use until you perform a software update to bring
the Controller up to date. This situation will occur if you perform a software update
from another Controller, or from the Desktop Controller software.
ZonePlayer(s) software updates
If a ZonePlayer’s software version gets out of sync from the rest of your Sonos Digital
Music System components, you will see the following message displayed on your
Zones menu:
Touch OK to begin the software update process.
One or more ZonePlayers may need to be updated if
you purchase a new ZonePlayer with a later software
version, or if you plug in a ZonePlayer that was not in
use when you performed your last software update.
You will also see this message if you have already
updated your music system using the Controller. This
message will indicate that the Desktop Controller
software needs to be updated.