I took my car for service on September 15 because of the "travel assist/emergency assist not available" dinging issue.
Instantly he said to me there appear two updates mandatory for my car, the one being for the OCU and the other being a generic update (I presume the update from 1650 to 1668 -I have firmware without letter and software 1650).
Two days later he informed me: OCU update successful. The generic update failed due to problems with the "central management processor" BCM; he ordered replacement BCM. Plus he ordered replacement wheel for the "travel assist/emergency assist not available" dinging issue, as this is due to the sensors in the wheel.
Order for both wheel and BCM placed with Germany and still waiting for parts to arrive. I am with a courtesy Tiguan in the meantime.
I will tell you more about updated OCU and updated software (IF I get my software updated as from what I read here it is not 100% certain) after I get it back.
I presume the firmware upgrade and software update to 1810 is NOT for my car, correct? (firmware with no letter, made around Q4 2019 for all I know)