Asprogrammer+21013 |best| -

It handles SPI, I2C, and MicroWire protocols.

Open your new firmware file ( .bin or .hex ), then click Program IC . asprogrammer+21013

It sounds like you’re looking for a proper guide to use with a CH341A programmer (the error 21013 typically appears when the software can’t find or initialize the programmer hardware). It handles SPI, I2C, and MicroWire protocols