Neoprogrammer 21 019 Ch341a !new! Full

Under Settings > I2C/SPI > Speed , you now have "Normal" (default ~3 MHz) and "Slow" (~1 MHz). For long wire leads or SoC-on-board programming (clips), "Slow" mode dramatically reduces bit errors. Older versions lacked this granularity.

To actually use this toolchain effectively: neoprogrammer 21 019 ch341a full

Beyond the Blue PCB: Deconstructing NeoProgrammer 2.2.0.19 and the CH341A "21 019" Under Settings > I2C/SPI > Speed , you