Sony SRS-ZR7 Help Manual page 9

Compatible USB devices
Software update
Updating the pre-installed software
Update method 1: Automatic update via the Internet
Update method 2: Manual update via the Internet
Update method 3: Manual update via a USB flash drive
Searching the latest software via a network connection
Manual update via a USB flash drive (when the update via a network has failed)
Wi-Fi signal strength
Checking the Wi-Fi signal strength (reception sensitivity)
About the standby mode
Standby mode differences
Notes on use
Precautions
What is BLUETOOTH wireless technology?
What is LDAC?
Trademarks
Important information on software
Notes on software
Support website
Customer support websites
Troubleshooting
What can I do to solve a problem?
Power supply
Unable to turn on the speaker
Any button on the speaker cannot be operated
The setup conditions of the speaker used last time are not retained
The speaker has entered the standby mode or BLUETOOTH/Network standby mode unexpectedly