Logitech MX Master 3S Manual page 22

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Unplug the receivers and remove the Bluetooth connections of all your Logitech

devices.

2. Open and run the Logitech Firmware Update Tool, keep your device turned on, and

wait until the software recognizes your device. This may take up to 30 seconds.

3. If the device isn't detected after 30 seconds, wake up the device by pressing any key

or restart the device.

● Logitech Options and Logitech Control Center macOS message: Legacy

System Extension

If you are using Logitech Options or Logitech Control Center (LCC) on macOS you may see a

message that legacy system extensions signed by Logitech Inc. will be incompatible with

future versions of macOS and recommending to contact the developer for support. Apple

provides more information about this message here:

https://support.apple.com/en-in/HT210999.

Logitech is aware of this and we are working on updating Options and LCC software to ensure

we comply with Apple's guidelines and also to help Apple improve its security and reliability.

The Legacy System Extension message will be displayed the first time Logitech Options or LCC

loads and again periodically while they remain installed and in use, and until we have

released new versions of Options and LCC. We do not yet have a release date, but you can

check for the latest downloads here.

NOTE: Logitech Options and LCC will continue to work as normal after you click OK.

MX Master 3S FAQs