Change the dropdown to Full Scan4 or the deepest level available. This forces the program to thoroughly evaluate every single memory block.
The "FA00" part of this string is a crucial code, but it doesn't point to a single chip model. Instead, it's a family identifier primarily associated with Alcor's widely-used of controllers. This means that a drive showing "FA00" is almost certainly built around an AU6989SN controller, a chip so prevalent that it's found in countless generic and branded USB 2.0 flash drives sold over the last decade.
Extract the downloaded AlcorMP archive and run AlcorMP.exe with Administrator privileges. alcor micro unknown fa00 f w fa04 top
Because this is a firmware-level issue, you cannot fix this with standard Windows formatting tools. You must use specialized (Mass Production Tool) software to re-flash the controller and properly pair it with the memory chip. 1. Identify the Exact Components
When a USB stick reports this specific string, it means the computer recognizes the controller (Alcor Micro) but cannot communicate with the memory chip properly due to missing or corrupted firmware. Alcor Micro Controller Part-Number: Unknown [FA00] Firmware (F/W): FA04 Change the dropdown to Full Scan4 or the
Keep the pins shorted, plug the drive into a USB 2.0 port, and then remove the short after 2 seconds.
If you cannot use the MP tool immediately, you can try basic system fixes: FIX USB Flash Drive Unknown Capacity Instead, it's a family identifier primarily associated with
This is the manufacturer of the USB controller chip—the tiny "brain" inside the flash drive that manages data traffic between the computer and the raw NAND flash memory cells.
Carefully pry open the plastic casing of the USB drive to expose the circuit board.