Mitsubishi Hands Free Module Firmware Update (MMCS NR-242)

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Navigate the Service Menu

Press on Hands Free Module.
While the Hands Free Module is in diagnosis mode, the sound input to the microphone unit is output directly through the speaker.
Check the Parts Number.
We'll need this later when downloading the Firmware file.
Check the Version Number.
If the Version Number is 19.00.000 or 50.00.000 you already have the last available Firmware installed and don't need to do anything.

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