Connect the drive directly to a (avoid USB hubs).
Extract the tool to C:\AlcorMP\ (avoid spaces in the folder path). Right-click AlcorMP.exe and select . The tool should detect your drive and turn a slot blue .
: Use ChipGenius to confirm the VID (Vendor ID) is 058F and the PID (Product ID) is 6387 or 1234 . alcor micro unknown fa00 f w fa04 top
The identifier is a technical diagnostic report typically generated by tools like ChipGenius . It indicates that your USB flash drive's internal controller is from Alcor Micro , but its firmware (F/W) or Flash Translation Layer (FTL) is corrupted, leading to the "Unknown" status .
Click . The process may take 10–60 minutes as it erases, scans for bad blocks, and rewrites the firmware. If the slot turns green , the repair was successful. Important Considerations Connect the drive directly to a (avoid USB hubs)
If you cannot use the MP tool immediately, you can try basic system fixes: FIX USB Flash Drive Unknown Capacity
: This process is permanently destructive ; all existing data on the drive will be wiped. The tool should detect your drive and turn a slot blue
: Find a version of the AlcorMP tool that explicitly supports the FA00 internal code. Reliable repositories include USBDev.ru and FlashBoot.ru . Prepare the PC : Use a Windows 7 or 10 PC with administrator rights.
The only effective way to revive a drive with this specific FA00/FA04 error is to use a factory "Mass Production" (MP) utility to re-initialize the controller.
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