Right-click the installation executable file and select .
: Click Program or Auto to begin the writing process. Troubleshooting
Click Device on the top menu, browse by vendor (such as Atmel or Winbond), and pick your exact chip model (e.g., AT89S51 or AT89S52 ).
Click and launch the app. The bottom taskbar should now glow with a green ONLINE icon. 💾 Step 5: Loading and Burning a HEX File willar programmer software for windows 10 install
The installation was the first strange part. Windows 10 warned him twice: “Unknown publisher. App may harm your device.” But when he clicked “Run anyway,” the installer didn’t ask for a directory. It didn’t show a progress bar. Instead, a terminal window opened, deep and black as a borehole, and pale green text began to type itself:
Unlike modern applications, some versions of WLPRO are portable, meaning they run directly from the .exe file. Go to the folder extracted in Step 1.
Many Willar programmers use unsigned drivers from 2010–2015. Windows 10 blocks these by default. To allow installation: Right-click the installation executable file and select
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| Error Message | Solution | |---------------|----------| | | Reboot with driver signature enforcement disabled (Step 2). | | “Installation failed – missing MSVCRT.dll” | Install Visual C++ Redistributable 2015-2022 from Microsoft. | | “USB device not recognized” | Try a different USB port (USB 2.0 preferred). Replace USB cable. | | “Programmer not responding” | Close the software, unplug programmer, restart PC, plug in again. | | “Access violation at address…” | Run the software as Administrator (Right-click → Run as admin). |
When a USB device is plugged into Windows 10, the operating system dynamically assigns it an available COM port number. Modern systems frequently assign double-digit numbers like COM14 or COM22 . However, the legacy architecture of Willar Programmer . If your port is outside this single-digit window, the application will lock into DEMO mode . Click and launch the app
Follow the on-screen instructions. Install to the default directory (usually C:\Program Files\Willem... or C:\GQ... ). Step 3: Install USB Drivers (If Applicable) If your Willar programmer uses USB:
The installation wizard typically includes:
October 2025 Compatibility verified with: Windows 10 22H2 (build 19045) Support resources: Willar user forums, EEVblog, and Reddit r/embedded