Hello. I have the following problem on my unit. I tried to install the 5238 firmware on it but i was stuck at the combinations of buttons. I tried a couple of times, but shortly after i have seen that i don’t get the vw logo on startup, the hdd capacity is not showing, i have no audio, and in the firmare version menu all i see is H04. I opened the unit and the part number was 1T0035680A written on it, but before i tried this firmware install it was 1T0035680L shown on the version info menu. Any solutions will ne much appreciated, thank you very much. 
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