The BTU-3.1 is a minor update to the BTU product. It is now compatible with the BUC capacitor module without the requirement of an external sense resistor.
It also adds the ability to change the Bluetooth device name using the FMR Configurator application. Note this ability is also added to the firmware for the previous BTU-3.0 with the BTU-3.0.6 firmware release.
FMR Configurator 1.2:
The FMR Configurator application has been updated to allow
the setting of the Bluetooth device name and the USB
random/sequential playback function.