I have the 8000NEX, and updated to the latest firmware.
I currently have an HDMI cable, and USB1 to a Lightning to USB Cable that I have connected to an Official Apple Lightning AV Adapter with a Lightning Extender Cord. I finally figure out how switch the Phone Settings on the head unit from AV to USB to enable CarPlay. I am unable to get CarPlay to work with this setup.
However, if I remove the official Lightning AV Adapter and plug directly into the USB Lightning cable, the head unit switches automatically into CarPlay mode.
Is the Apple AV Adapter incompatible with C
