: For modified versions with specific chip support, the dregmod repository provides alternative builds.
Even the best software can encounter issues. Here are some common problems and their solutions.
As of 2025, the original developer has not released a major update beyond 2.1.0.13. However, the community has forked the project into newer tools like and SNANDer . Nevertheless, version 2.1.0.13 remains actively used because:
. Tech enthusiasts and repair technicians widely use this specific version to rewrite or unbrick corrupted BIOS chips, SPI NOR/NAND flashes, and EEPROMs across millions of motherboards, routers, and electronic devices. asprogrammer 21 013 download free
Supports 24/25 Series EEPROM and SPI Flash chips.
Once you have downloaded the software and have your hardware (e.g., CH341A) ready, follow these steps:
The safest way to download ASProgrammer 2.1.0.13 is to avoid third-party "download managers" that bundle adware. Instead: : For modified versions with specific chip support,
Because AsProgrammer is open-source, it is freely available. However, it is essential to download it from trusted sources to avoid malware or altered versions.
: Some chips stuck in "Deep Power Down" may fail to read. Using the "Read ID" button can sometimes issue a "Release from Power-down" command (0xAB) to wake the chip. Backup Protocol
: Works seamlessly with UsbAsp, AVRISP-MKII, Arduino (via custom sketches), and the highly affordable CH341A. Portability As of 2025, the original developer has not
Technical Paper: AsProgrammer 2.1.0.13 — A Versatile Interface for CH341A Hardware 1. Introduction CH341A USB Programmer
The version number "21.013" that you're searching for refers to a specific release of the software, . The presence of the "21" seems to be a truncation of the full "2.1.0" prefix, with "013" completing the version string. It is important to note that this is not a "Version 21" of the software, but rather version 2.1.0.13.
Identify Pin 1 on the integrated circuit (indicated by a small dot or dimple). Match it with the of your SOIC8 SOP8 test clip.