Asprogrammer 21013 [updated] ★ Hot

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Title: Unlocking Flash Memory: A Quick Look at ASProgrammer 21013 asprogrammer 21013

If you work with BIOS chips, EEPROMs, or SPI flash memory, you’ve likely heard of ASProgrammer. The version 21013 is one of the most stable and widely used releases of this open-source tool. Title: Unlocking Flash Memory: A Quick Look at

Step 2: Install the CH341A Driver (Critical for Windows 10/11)

  1. Connect your CH341A programmer via USB.
  2. Open Device Manager. You will likely see "USB-EPROM" with a yellow exclamation mark.
  3. Navigate to the /Drivers/ folder.
  4. Run CH341A_DRIVER_SETUP.exe as Administrator.
  5. If on Windows 10/11 with driver signature enforcement, you may need to:
    • Restart PC → Press F7 (Disable Driver Signature Enforcement), OR
    • Use the zadig tool to replace the driver with WinUSB or libusb.

Part 1: What is ASProgrammer 21013?

Contrary to what the name might imply, ASProgrammer 21013 is not a new piece of hardware. It is a specific version number (v2.1.0.13) of a universal programming software developed by a Russian programmer known as "Sergey." The software was designed to replace the notoriously buggy and limited Chinese software that ships with cheap USB programmers, especially the ubiquitous CH341A family. Connect your CH341A programmer via USB

The Meaning of the ID (21013)

When AsProgrammer (or any SPI programmer) queries a chip, it sends a standard command (0x9F - JEDEC ID). The chip responds with 3 bytes.

  1. Manufacturer ID (Byte 1): 0x21 (37 in decimal). This is the assigned code for AMIC.
  2. Memory Type (Byte 2): 0x01. This identifies the memory type/voltage range.
  3. Capacity (Byte 3): 0x3B (59 in decimal). This corresponds to the density. In many SPI flash naming conventions, the capacity byte relates to $2^CapacityByte$ bits or a specific density code.

Note: The user input "21013" likely represents the Manufacturer ID (21) followed by the Memory Type (01) and potentially a truncated or user-recalled portion of the capacity byte.

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