I tried again today without changing the programming, and it simply worked. It seems the truck just needed a night's rest. The HDC hard switch is still working normally. Original 760-03-01 was 683C 5463, changed to 683C D493.
Maybe you can help me with this, my original 760-03-01 is like this 683C 5463. As it says in the spreadsheet, I added 8 to the indicated bit, making it 683C D493. Now it is possible to activate the function in the off-road menu, a message appears indicating that the system would be activated...