Neoprogrammer | V2.2.0.10

| Feature | Neoprogrammer V2.2.0.10 | AsProgrammer | FlashROM (CLI) | |---------|------------------------|--------------|----------------| | | Free | Free | Free | | GUI | Excellent (modern) | Basic | None | | Speed (CH341A) | ~5-6 KB/s (SPI) | ~4 KB/s | ~5 KB/s | | I2C Support | Full + auto timings | Limited | Manual only | | Batch mode | Yes | No | Scriptable | | Chip detection | Automatic | Manual ID entry | Manual |

Neoprogrammer is a free, open-source utility originally forked from AsProgrammer. It is designed to interface with the ubiquitous CH341A USB-to-SPI/I2C adapter—a $5 dongle found on Amazon, eBay, and AliExpress. While the hardware is simple, the software determines its capability. Neoprogrammer V2.2.0.10

Neoprogrammer V2.2.0.10 is the clear winner for Windows-based GUI flashing. | Feature | Neoprogrammer V2

: Click the "Write IC" button to start the programming process. Neoprogrammer V2