UP2718Q, firmware update, not working on Apple OS X 10.13.5?

The UP2718Q offered the firmware update as "part" of the Ultrasharp Calibration Solution for Apple Mac OS X. The Ultrasharp Calibration Solution was released by Dell on 12/22/17. In theory, it should work on Apple Mac OS X High Sierra 10.13.2 17C89 12/6/17 and prior versions released prior to 12/22/17. But later versions were not tested =
10.13.2 17C205 1/8/18
10.13.3 17D47 1/23/18
10.13.4 17E199 3/29/18
10.13.5 17F77 6/1/18
10.13.6 17G39b 6/12/18

You might ask the Apple users on their Forum for troubleshooting assistance.

DellUltraSharpCalibrationSolution (Mac).zip

Once downloaded and extracted, there are two HTML files to review =
Firmware Update Instruction
README

Thank you Chris, I will try it again.