2. Method A: The DOSBox Approach (Recommended for Windows 10)
You can find "All-in-one" USB programming cables on Amazon or eBay for the GM300. These have the RIB circuitry built into the USB plug and a USB-to-Serial converter integrated. These are generally the easiest solution for Windows 10 users, provided you can find a cable with a legitimate FTDI chipset (fake chipsets often cause erratic behavior).
Before you continue, you must understand the regulations.
2. Method A: The DOSBox Approach (Recommended for Windows 10)
You can find "All-in-one" USB programming cables on Amazon or eBay for the GM300. These have the RIB circuitry built into the USB plug and a USB-to-Serial converter integrated. These are generally the easiest solution for Windows 10 users, provided you can find a cable with a legitimate FTDI chipset (fake chipsets often cause erratic behavior).
Before you continue, you must understand the regulations.