If Windows doesn't even see the FA00 device, you need to force the controller into "ROM Mode."
A user named SiliconSage had posted a thread five years prior.
Once you download the correct version, extract the .zip archive and follow these steps to execute the firmware repair: 1. Force Driver Hooking
to begin the low-level format. This will erase all data but should "revive" the hardware and restore its capacity. Standard Recovery (If Hardware is Functional) alcor micro unknown fa00 f w fa04 fixed
When Windows Update pushes a generic "USB Mass Storage" driver to an Alcor device, the device enters a logic trap:
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).
"Alcor Micro chips throw FA00 when the internal firmware loses its pointer. It is not dead. It is just confused." If Windows doesn't even see the FA00 device,
To ensure you get the exact software version needed for your recovery, tell me:
How to Fix the Alcor Micro "Unknown FA00 F/W FA04" USB Error: A Complete Guide
Leo held his breath. SiliconSage had attached a custom, modified firmware utility labeled . 🛠️ The Operation This will erase all data but should "revive"
Obtain the exact AlcorMP version matching your drive’s controller (e.g., AU6989SN) and repeat the process with “Auto Detect Flash” disabled, manually selecting a FA04 entry if available.
The phrase "Unknown FA00" is a common sight in flash diagnostic tools like or Flash Drive Information Extractor . It usually indicates that the controller firmware is either corrupted, generic, or unrecognized by older software databases.
Because "FA00" is a generic masking code, you need to determine the drive's true underlying hardware profile before selecting a repair utility.
Note the VID (Vendor ID), PID (Product ID), Controller Part Number (e.g., AU6989SN, AU6998AN), and the Flash ID (e.g., Samsung, Toshiba, or Hynix strings). Phase 2: Finding the Correct AlcorMP Tool
When the process finishes successfully, the status box will turn and display an "OK" or "Success" message, alongside the newly minted storage capacity. Step 5: Post-Recovery Verification