Stick with 2.1.0.13 for BIOS work. Switch to NeoProgrammer for weird I2C peripherals.
The software transmits a "Read" command. The CH340 drives the Chip Select line low and clocks out the Read Data opcode (0x03 for standard SPI). The binary data is retrieved into the software’s hex editor buffer. This process is typically slower than dedicated programmers due to the overhead of USB-to-Serial translation.
For years, tech communities have debated the best software interface for low-cost hardware flasher modules. The table below outlines how AsProgrammer 2.1.0.13 stacks up against alternative utilities: Feature / Metric AsProgrammer 2.1.0.13_fix NeoProgrammer (v2.2+) Stock CH341A Programmer Stability & Wide Protocol Support Rapid UI Execution & Modern Layout Basic Out-of-the-Box Flashing Database Updates Frequent via community forks Moderately Frequent Deprecated / Outdated SRE / Verification Highly accurate, strict error logs Fast, sometimes skips deep errors Prone to false positives Interface Complexity Moderate (Developer oriented) Low (Streamlined GUI) Low (But buggy translation) Special Protocols I2C, SPI, Microwire, AVR I2C, SPI, Microwire Strictly basic SPI / I2C asprogrammer 21013
: The preferred command-line tool for users on Linux systems.
AsProgrammer.exe /read "backup.bin" /detect /auto Stick with 2
The 2.1.0.13 version (and its common "fix" variants) refined the user interface and expanded the database of supported chips. Its core advantages include:
In some cases, you may have a chip that isn't in the database, or the software incorrectly identifies it. Because AsProgrammer is open-source, you can easily add support for new chips by editing the chiplist.xml file. The CH340 drives the Chip Select line low
This version is packed with utilities that make it superior to the generic software shipped with CH341A black edition programmers.
While many low-cost programmers ship with clunky, outdated, or proprietary software, has emerged as a premier open-source choice. This portable Windows utility provides a highly reliable, feature-packed interface for reading, writing, and manipulating EEPROM and SPI flash memory. What is AsProgrammer 2.1.0.13?