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Old 08-06-2024, 08:18 AM
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Join Date: Aug 2024
Location: Germany
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MKIV Firmware modification

Hello everyone,

my name is Tim and I'm new here in the forum.
I have the MKIV installed in my BMW and I bought a CarPlay box for the TV module, which is fed through the reverse camera input. Everything works so far, but when I ground the signal from the TV module, I can no longer access the MKIV system. Can the MKIV firmware be modified so that when I press the phone button on the monitor, the navigation computer outputs the reverse signal and I can use it to control a relay that grounds my signal?

Thanks for your help.

Best regards,
Tim
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