It was a pleasant surprise to see Epomaker ditch its aging and non-friendly GK6XPlus software drivers for the EP75 in favor of something simply called "EPOMAKER." The software downloads page of the Epomaker website contains the installer link for Windows OS with the latest version at the time of testing being V1.06.03 that is ~29 MB in size. The installation process is smooth and detailed as seen above and the final install size 87 MB. The program is fairly light on system resources despite being not a device-specific software solution.
The Epomaker software drivers require the keyboard to be connected to the PC in wired mode for it to be recognized and the home page confirms this is a more universal program that will work with other Epomaker keyboards no doubt. There is a thumbnail of the EP75 here that takes you to the device-specific settings. I am quite happy with the layout and user interface of the program given it's logically laid out and has global settings allowing you to update the program, test for any new keyboard firmware, change the language of the software drivers etc. It also scales well with Windows OS scaling level and display resolution and there is even a functioning minimize and maximize button to where this is shaping up to be among the better such keyboard software drivers today!
The video above provides a walkthrough of the software customization possible for the EP75 and I will point out right away how good it is that Epomaker makes it clear whether any key mapping done is software-based or saved on board the keyboard. There are different sets of options accordingly and the latter is enough to allow you to change the typing layout if you preferred, say, Dvorak over QWERTY. You can also create and edit software profiles and these provide extensive key mapping options with layer support too. There is a global macro recorder/editor which is also recognized in the key mapping menu as seen above. Then we get to the lighting section where the EP75 provides customization over not only the switch-based LEDs but also the side lighting LEDs in a separate tab. The former have far more options though but you can easily synchronize the lighting effects via a simple check box. Epomaker provides several static, dynamic, and reactive lighting effects with their own specific options for further customization and there are also custom per-key effects affording full 16.8 M colors on offer. Overall I am plenty satisfied with the new software program and this helps address one of the biggest issues I had with previous Epomaker keyboards.