NeoProgrammer v2.1.0.19 is a popular, lightweight utility for Windows specifically designed to work with the CH341A USB programmer
Verify MD5/SHA: When downloading from forums, check if the uploader provided a hash to ensure the file hasn't been tampered with. Neoprogrammer 2.1.0.19 Download
What’s new
Neoprogrammer 2.1.0.19 is currently one of the best third-party software solutions for the ubiquitous CH341A programmer hardware. It solves the biggest pain points of the official manufacturer software—namely driver conflicts, ugly interfaces, and safety risks—by offering a streamlined, English-language interface that automatically handles voltage selection. If you own a cheap CH341A USB programmer, this software is almost essential. Neoprogrammer 2
Run SETUP.EXE: Run the executable to install the necessary CH341A USB drivers. Quick summary of Neoprogrammer 2
macOS (DMG or Homebrew):