Here is something I did not expect.
The current public (not beta) version of macOS is 10.15.1.
After receiving my GC50, I decided to update the firmware to the latest version.
The most recent macOS version Casio supports is version 10.13 macOS High Sierra versions of macOS.
Lucky for me I have a MacBook Air in storage in my closet which cannot run Mojave, so I could use that machine to upgrade the firmware on my new GG50.
Strange Casio is so far behind. For those who have Mojave, they are completely out of luck to update the firmware on their Casio graphing calculators.
Surprise!
Quote:
macOS High Sierra was announced at the WWDC 2017 on June 5, 2017 and was released on September 25, 2017; its successor macOS Mojave was released on September 24, 2018