The U2718Q must be connected to a true Windows computer to run the firmware update. Dell never tested/validated the U2718Q on the Apple proprietary hardware, operating system (including Windows Bootcamp), and drivers.
* The U2718Q sales site Tech Specs specifically states, "Operating system supported Windows 10, 8.1, 7"
* When you open the U2718Q User's Guide, there is no mention of Apple
* When you open the U2718Q driver page and check the operating system list, there is no mention of Apple
* When you go to the M2B102 firmware page, there is no mention of Apple under "Supported Operating Systems"