The chip has a small dot (or notch) indicating Pin 1 . This must line up with the red wire of your test clip.
Complete Guide to NeoProgrammer 2.1.0.19 and the CH341A Programmer
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NeoProgrammer is a lightweight, portable utility designed to interface with CH341-based programmers to read, write, and verify BIOS and EEPROM chips. Chip Support
The release is particularly well-regarded for its stability, extensive chip support, and improved user interface, often serving as the preferred upgrade over older versions like AsProgrammer 2.1.0.13. What is NeoProgrammer 2.1.0.19? neoprogrammer 21019 ch341a link
To ensure your safety when using the NeoProgrammer link, modify your hardware using one of these methods:
While version is very stable, the latest available version as of 2026 is 2.2.0.10 . Both versions are based on the open-source AsProgrammer project but were significantly refined by developer TTAV134 . Download Links : The chip has a small dot (or notch) indicating Pin 1
The Neoprogrammer 21019 CH341A is a type of programmer used for flashing and debugging microcontroller-based projects. It's a highly versatile tool that supports a wide range of microcontrollers, including EEPROM, flash, and serial memories. The device is based on the CH341A chip, a popular and highly capable chip developed by WCH (WinChipHead), a leading manufacturer of USB peripheral controllers.
In the NeoProgrammer toolbar, click the icon (Detect) or press the Search button. A dialog box will appear listing matching chip manufacturers and models based on the read JEDEC ID. Select your exact chip model and click Choose . Step 3: Backup the Original Firmware (Crucial) Chip Support The release is particularly well-regarded for
If you’ve ever tried to recover a dead BIOS chip, flash a custom firmware on a router, or reprogram an EEPROM, you’ve likely heard two names: and NeoProgrammer .