Vogon Poet

I have similar audio problems with my AVIC-110 (AVIC-120 upgrade) that is caused by either noisy or low voltage. I have been chasing a problem with audio sources muting when my RV is plugged into house power. The voice control, guidance and beeps work but some or all other audio sources have no audio out. The problem seemed random until I tried using the system on battery power alone. Then the problems went away! It appears that when I am plugged in, my 12VDC comes from an inverter, which is either giving a noisy 12V or low voltage, causing the audio driver to shut down or act sporadically

This thread's been dead a while but two questions arise: 1) Is this a European upgrade only? (the ShortFuse zip file contains a EU090APL.VER file) 2) The link to 1.001000.zip is long dead. Is this the same file as the AVIC_Z110_1.001000.ZIP from Pioneer? Thanks!