The developer "Sergey" has not updated the main branch since 2019, but the community continues to submit pull requests for the 21013_mod branch. This version will likely be maintained until CH341A hardware becomes obsolete.
Review the HEX workspace to ensure it isn't completely filled with 00 or FF (which indicates a bad physical connection pinout). asprogrammer 21013
: Click Verify IC to cross-examine the chip's newly written contents with the source file on your PC. Troubleshooting Common Flashing Failures Error: "Main memory verification error..." The developer "Sergey" has not updated the main
: Software versions are sometimes tagged with dates (e.g., Year-Month-Day), though "21013" does not cleanly fit a standard 2021 date format. A Local File Reference asprogrammer 21013