Alcor Micro Unknown Fa00 F W Fa04 Fixed
Look for AlcorMP_AU6989_FA04 or AlcorMP v14.03.08.00 . Do not use the newest version; use one released around the same era as FA04 firmware.
designation is frequently reported as a "phantom" controller name that appears when the tool cannot read the Flash ID (FID) of the memory chip. This is usually caused by: Using an incompatible version of the AlcorMP tool.
USB flash drives powered by Alcor Micro controllers are popular for their affordability and performance. However, they are prone to firmware corruption, often manifesting as the "Unknown FA00" error. This guide provides a detailed walkthrough for fixing the Alcor Micro Unknown FA00 F/W FA04 error and restoring your drive to full functionality. Understanding the FA00 F/W FA04 Error
We will approach this in two phases: attempts to recover the drive without losing data. Phase B is a destructive repair (you lose data, but get a working drive).
controller when the tool fails to identify the hardware correctly. Common Fixes for Alcor Micro FA00 Errors alcor micro unknown fa00 f w fa04 fixed
In the tab, ensure the flash chip is correctly identified. If it still says "Unknown," the tool is incompatible. In the Other tab, set the "Current" to 200MA .
Download a community-modified version of the software, such as the editions by NAT27. ⚡ Step-by-Step Recovery Procedure
Getting the "Unknown [FA00]" error on an Alcor Micro USB controller typically indicates a firmware mismatch or a controller that has entered a "read-only" or "no media" state due to corrupted instruction sets. This specific code, often associated with the or AU6989SNCS-TA controller, means the mass production tool (MPTool) sees the hardware but cannot identify the specific firmware profile needed to initialize it. Why "Unknown [FA00]" Happens
Before you do anything, let's manage expectations. Look for AlcorMP_AU6989_FA04 or AlcorMP v14
Note: Using the wrong version can permanently "brick" the drive. 3. Configure the Tool
Click . If prompted for a password, leave it blank and press Enter.
Alcor Micro uses "Mass Production" (MP) tools for factory-level formatting and firmware flashing. You need a version that supports your specific controller and flash memory. For general AU69xx series controllers. ALCOR MP_AU698x: Specific to the 698x series.
This comprehensive technical guide outlines why this error happens and provides a step-by-step flashing walkthrough to resolve it. Understanding the "Unknown [FA00] F/W FA04" Error This is usually caused by: Using an incompatible
Restart your computer. Windows will attempt to reinstall the driver automatically. 3. Use AlcorMP Production Tools (Firmware Repair)
Alcor Micro has produced many controller models (e.g., AU698X series). The "FA00" signature is a generic fallback mode, so you will need to find the correct factory tool. You can find these tools on specialized forums (such as FlashBoot.ru or USBDongle.com) or with careful internet searching for "ALCOR MP tool" combined with your drive's USB IDs (VID and PID). The most common tool for these controllers is , which comes in many versions (e.g., v16.02.19.00).
Leave this on Auto or select your specific NAND manufacturer if known. MP Mode: Set this parameter to Product or Prior Optimize .
Across major forums (USBDev, Reddit’s r/datarecovery, MyDigitalLife, and BadCaps), users report success when they follow a specific workflow:
