# Downgrade Controller Bluetooth Module Software

It is possible to downgrade controller Bluetooth module software.

1. In the controller user interface, select the Hardware tab.

2. In the Bluetooth Module section, select icon to the right of the version number.

   The Choose an item view appears.

3. Select the Bluetooth module software version to which you want to downgrade.

   The Warning view appears.

4. Select Yes to downgrade the Bluetooth module software.