Troubleshooting : Erratic behaviour

Short answer

Perform a factory reset by pushing and holding the media control button for 10 seconds. Or download the Marshall Bluetooth app to check for new firmware updates.

There can be several reasons why your Stanmore III speaker behaves erratically. Try these tips to solve the issue:

Perform a factory reset by pushing and holding the media control button for 10 seconds. This will restore the speaker to its original settings.

Download the Marshall Bluetooth app and connect it with your speaker. Follow the in-app instructions to check if there are any new firmware updates to install.

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