Always Read and Save before making changes.
đź“Ś For a full list, check the chip.cfg file included in the download. Neo Programmer 2.1.0.19 Download -
The software has seen several iterations, but version 2.1.0.19 remains a favorite among the community. Here is why: Hardware Compatibility :
Even with stable software, hardware quirks can cause issues. Here is a cheat sheet: Operations :
| Error Message | Most Likely Cause | Solution | |---------------|------------------|----------| | "CH341A device not found" | Driver not installed or USB cable faulty | Reinstall driver, try another USB port, replace cable. | | "IC not responding / ID mismatch" | Bad contact, wrong chip selected, or dead chip | Reposition chip in socket, clean pins with isopropyl alcohol, select the exact chip model. | | "Verify failed at address 0x0000" | Voltage mismatch or buffer overflow | Check 3.3V/5V jumper. Reduce buffer size if reading a large chip (e.g., >16MB). | | "Write operation timeout" | Slow USB or background processes | Close other apps, use a USB 2.0 port (USB 3.0 can cause timing issues). | | "Pin out conflict (pins 3,7)" | Chip not compatible with CH341A's limited pinout | You cannot program parallel NAND flashes—only SPI/I2C/Microwire. |