ASProgrammer 2.1.0.13 is a professional programming software primarily used for reading, writing, erasing, and verifying data on EEPROMs, SPI Flash memory chips, and microcontrollers. It acts as a bridge between a PC and a hardware programmer (such as the CH341A), allowing users to manipulate firmware at the hardware level.
| Chip Category | Example Part Numbers | Protocols Supported | | :--------------------- | :----------------------------------------- | :------------------ | | | W25Q, MX25L, GD25, EN25, S25FL series | SPI | | SPI NAND Flash | W25N, GD5F, MX35 series | SPI | | SPI EEPROM | 25xx, 95xx series | SPI | | I2C EEPROM | 24Cxx series (e.g., 24C02, 24C64, 24C256) | I2C | | MicroWire EEPROM | 93Cxx, 93LCxx, 93AAxx series | MicroWire | | SPI FRAM (F-RAM) | FM25V series, MB85RS series | SPI | | AVR Microcontrollers | ATmega, ATtiny series (partial support) | ISP |
New memory chips enter the market constantly, utilizing varying page sizes and voltages. Build 2.1.0.13 integrates a massively updated XML definition schema to prevent the dreaded "Unknown Chip ID" error when reading modern components. 2. Status Register Transparency
Use a digital multimeter to verify the voltage output across the logic pins.
A return code generated by the programmer’s driver when communication between the PC and the USB hardware breaks down. asprogrammer+21013
[Host PC with AsProgrammer] ---> [CH341A USB Dongle] ---> [SOIC8 Clip / Adapter] ---> [Target Flash IC] The 3.3V Hardware Alert
For advanced users, ASProgrammer has a command-line interface that can sometimes bypass the graphical error handling that causes the 21013 popup.
Enter (specifically the updated, frequently updated version 2.1.x), which has emerged as a top-tier open-source solution for programming flash memories. It provides a robust, GUI-based interface that supports a wide array of chips and programmers, making complex flashing tasks accessible. As of 2026, the updated nofeletru/UsbAsp-flash repository is the primary source for the latest, most compatible version, often referred to as AsProgrammer 2.1.2.
When you search for , you are not looking for a software version. The number 21013 does not refer to a build number or a release date. Instead, it refers to a specific hardware identifier (USB VID/PID) or a common chip detection response code that appears in the ASProgrammer logs. ASProgrammer 2
Offers better visibility and control over status registers, which is crucial for unlocking write-protected chips.
Added support for newer IC families such as Fudan FM25Q128 and various IS25LP/WP series.
The software communicates directly with the CH341A chip’s parallel and SPI interfaces. For advanced users, it exposes low-level parameters that are locked away in other utilities.
Open (right-click Start button). Find your CH341A under "Universal Serial Bus devices" or "Ports (COM & LPT)". Right-click it and select Uninstall device . Check the box "Delete the driver software for this device." Build 2
"Don't fight the input, Elias," the voice over the intercom was smooth, synthetic, yet undeniably human. "The resistance is just a legacy error. We’re just patching you."
AsProgrammer dregmod allow you to program flash ... - GitHub
Install the driver (for parallel/programmer mode), not the serial COM port driver. Instant Freeze on Write Chip is completely locked or dead. Replace the physical SPI flash IC with a new one.
Open AsProgrammer 2.1.0.13. The interface will show the chip's current state. 3. Selecting the Chip