DUDU-Meng
I do know that it was for sure the 250729 version update that fixed the issue with android auto. For my Dudu7 head unit, the Bluetooth and MCU update were not necessary to fix the connection issue.I did the MCU and Bluetooth update afterwards for no particular reason at all, only because I found them on the forum, in order to have the latest versions available.
Thanks anyway for the ongoing support.