User Manual

39
Using the products
왘 Use a dual-band WiFi router and deactivate its 2.4 GHz frequency band in
order to minimize interference to the radio links.
왘 Connect your mobile devices to the WiFi network and install the “Wireless
System Remote” (WSR) app.
All functions that can be performed directly from the receiver can also be
controlled via the app.
Performing firmware updates
You can either use the “Wireless System Remote” (WSR) app or the
“Sennheiser D1 SL Updater” software to update the firmware. Both the app
and the software can be downloaded free of charge.
The app and the software automatically detect all receivers in the network,
read their firmware version and offer to update the firmware if a newer ver-
sion is available.
Preparing the firmware update 왘 Make sure that all receivers are connected in a network as described on
page 20 and that all receivers are switched on.
왘 Switch off all transmitters.
You first update the firmware of the receivers via the network. Then you
update the firmware of the transmitters via the radio links.
Updating the receiver firmware using
the “WSR” app
To update the firmware using the “WSR” app:
왘 Make sure that your mobile device has Internet access so that you can
download the firmware file.
왘 Start the app.
When started, the app automatically checks for newer firmware.
When started, the “WSR” app automatically checks for newer firm-
ware. You can update both the receiver firmware and the transmitter
firmware (see next chapter).
ATTENTION
Breakdown of radio links during the firmware update
All radio links are subject to interference during the firmware update process
and can therefore not be used for audio transmission.
왘 Never update the firmware during a performance.
왘 Never update the firmware of several transmitters simultaneously.
Breakdown of multi-channel systems due to different firmware versions
All transmitters and receivers of a multi-channel system must run the same
firmware version.
왘 Always update all your transmitters and receivers to the latest firmware
version available.
You can also display the current firmware version of a receiver via the
System Info menu item – without the need for the “WSR” app or the
“Sennheiser D1 SL Updater” software.