MCU firmware 5.3.19-90-12 - Android Head-Units

Hi,
Anyone has an firmware update for this MCU? I don't get anymore sound from usb, navi, spotify (I get sound just for the radio app) with the current version. It all started 1 year ago, and at the begining just the left side speaker didn't worked for the usb, navi, spotify, now both of them are not working.
Thanks,
Horia
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