Please try the following:
Cannot update product software using Bose Connect app
- Make sure the battery level is above 20%. The battery level must be above 20% in order for an update to be installed
- If there are issues updating product software via the Bose Connect app, try updating the product by connecting it to a computer with a USB cable
- Make sure you are running the most up to date version of the Bose Connect app
- Try clearing the paired device list in the Bose speaker and Bluetooth® enabled device