DIY: Joyeauto Wireless CarPlay for NTG4.5/4.7
As a technique I keep the phone bluetooth paired with the stock BT system and select the MB Bluetooth on the audio menu of the phone when making calls. It seems to maintain that preference for multiple calls until the car is turned off. CarPlay is used the entire time so I don't have to switch back to the MB screen in Comand.









After you update, lock the car and leave it off for more than 10 minutes. The next time you start the car the current software will be loaded.




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I don't know if Joyeauto will supply one eventually but there appear to be couple different companies offering what appear to be similar, if not identical units. FWIW, I purchased a unit from Road Top (via aliexpress) as the identical unit from Road Top on was more expensive. (It looks like the prices are much closer now. YMMV)
I wanted to try it out in the wife's GL and the installation instructions are essentially identical except for fewer required connections.
IMHO, these newer units have several advantages:
- Longer, and simplified, wire harness so it's easier to place bundle behind Comand unit
- Uses MB mic for phone calls
- No need to wire mic or AUX cables, but you still may need to enable AUX in the Comand engineering mode
- Unit automatically switches CarPlay to dark mode instead of on a fixed schedule
- MUCH more reliable wireless CarPlay connection. It "just works"
- Much more simplified system settings
- Less expensive
- Road Top does not have a website that I know of, so support may be a consideration, including future firmware updates. That said, this new unit is FAR more refined and polished as it is.








I'm gonna suspect that you may have bricked your unit if neither Joyeauto or your reseller can't help.








In a previous post you said you were trying to install appcore.enc, so *IF* it was appcore.enc it was the wrong file.



