Controller firmware update
Bluetooth devices may have driver firmware update capabilities.
There is always a possibility that either bugs or security flaws will be found in a device’s controller firmware. The only mechanism that can be used to solve those bugs and security flaws is via firmware updates.
For the above reasons, it is fundamental to include a controller firmware update mechanism in a device, otherwise if a problem is found, it will be impossible to fix it without recalling all the devices in use.
The procedure consists on verifying that there is in place any update mechanism to update controller firmware in the device under study.
Each manufacturer may choose to include different proprietary mechanisms.
This control is considered satisfactory when it is verified that the device supports remote firmware updates.
To check this control, the following resources may be useful: