hi, I read all posts that I can find regarding Latitude 7490 ( with the Micron 256 GB SSD).
I also bought a Dell Latitude WiFi Card 0VW3T3 DW-1820A
I followed the install guide from Herve, same picture here with the files 6 and also 7 I got KP.
I renamed DSDT and I was able to install Mac OS.
But it is still not fixed with the version of 7 of the files.