BMW E38 doesn't recognize GROM USB-3

Car make: BMW E38 750il 2001


the car is equipped with DSP. I did the installation as per the instructions:

1- The trunk CD changer 3 pin cable to the USB3.

2- The DSP converter 6 pin cable to the USB3.

3- The amplifier coaxial cable to the DSP converter.

4- The DSP converter is powered with 12V and grounded.

5- A FAT32 USB stick with 6 numbered folders is connected.



The car doesn't switch to the USB device; knowing that it switch normally to the factory CD changer when in place.



The car has a single mode button that switches between the available modes, and it discovers only FM/AM and TAPE.

I tried to update the firmware; just to verify that the device is functioning.

The USB stick light didn't light up or blink. the key was in ignition position, and there was power feeding the device.

Comments
  • Please double check that the 3-pin plug is going in straight when plugging into connection in vehicle.
    Make sure no Pins are bent or pushed in and all aligned.

    If that does not help then I recommend you fill out support ticket for further assistance.
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