SySS GmbH found out that the embedded flash memory of the Microsoft Designer Bluetooth Desktop keyboard can be read and written via the SWD (Serial Wire Debug) interface of the used nRF51822 Bluetooth SoC as the flash memory is not protected by the offered readback protection feature.
a5148241981394c2a24fc78dd0e069153a14fc48069935d8f1b62a025fbcf8aa