Only buy the G540 if you are comfortable with legacy Windows driver hacks or Linux command-line tools. If you need a modern alternative, consider the Xgecu T48 or TL866II Plus —they have actively maintained software.
An improved English software version, which corrects many original translation errors, is available on EDAboard.com .
https://gitlab.com/DavidGriffith/minipro/
Press (or 7) to select "Disable driver signature enforcement".
The G540 was originally designed for Windows XP and often fails on newer systems due to driver signing. To get it working: