If you have tried everything (disabled signature enforcement, used Zadig, installed PICPGM) and your still does not work, do this:
Expand . If you see a Prolific USB-to-Serial entry with a yellow warning triangle, right-click it and choose Uninstall device .
and enter the COM port number assigned to the programmer in Windows Device Manager. Programmer Selection File > Programmer and ensure is selected. Operations : The software allows you to a HEX file, existing firmware, and successful writes. Key Hardware Features davemaster/PIC-USB-Programmer-K150 - GitHub
Follow the on-screen prompts to complete the installation framework.
The K150 USB PIC Programmer is a popular, low-cost device for programming Microchip PIC microcontrollers, especially for those starting out. However, its design is based on a USB-to-serial chip—usually the Prolific PL-2303HX or FTDI FT232BM—that is considered outdated. These legacy chips are no longer natively supported by Microsoft's modern driver model, which prioritizes security and stability. This incompatibility is the primary reason Windows 10 doesn't automatically recognize or work with the K150. The root cause often involves Windows attempting to install an incompatible driver or being blocked by driver signature enforcement. Despite these hurdles, with the right combination of files, the K150 can be a functional tool for your projects.
Right-click the "Prolific USB-to-Serial Comm Port" in Device Manager and select Uninstall device , ensuring you check the box for "Delete the driver software for this device" . Install Legacy Version: Run the older driver installer.
Click > Options (or look for the hardware settings tab depending on your software build) and ensure the programmer type is designated as K150 .
It does support 3.3V-only PICs (e.g., PIC24, dsPIC) or PIC32 without external level shifters.
Specifically, you typically need an older version (like v1.7.0 or a Vista-era driver ) because newer versions are incompatible with the K150’s hardware. 2. Fixing the Windows 10 Driver Issue
Before starting, you need a software bundle containing the driver and the programming interface. Look for a trusted electronics hobbyist repository or github archive containing:
I can provide targeted troubleshooting steps or structural diagrams for your specific microcontroller setup. Share public link
What (if any) are you seeing in the Micropro window?
