: Return to the main window dashboard and click Start . The utility will begin erasing the corrupted blocks and flashing fresh microcode onto your drive. Keep the device plugged in until the status bar shifts to green text , signaling a successful repair. Hardware Troubles: Forcing Factory Test Mode
Follow these sequential procedures to force the USB drive back into a working state. Step 1: Switch to a 32-Bit Environment and USB 2.0 Port
Use a tool like (Windows) or lsusb (Linux) to identify the VID ( 058F ), PID ( 1234 ), and the Controller Part-Number ( Unknown [FA00] ).
With the USB drive , locate the data pins on the NAND flash chip (typically pins 29–32 or 41–44, often marked with a small dot near pin 1). alcor micro unknown fa00 f w fa04 work
Access the settings and manually enter your device's VID/PID (standard is often 058F / 6387 ).
You’ve searched for “” hoping for a magic bullet. The frustration is real: your smart card reader, fingerprint scanner, or USB hub isn't working, and Windows refuses to auto-find the driver.
Click the button on the right side of the main menu. If prompted for an access password, leave the field completely blank and click Enter. Navigate directly to the Flash Type settings tab. : Return to the main window dashboard and click Start
In an ideal world, software would read the Alcor chip and instantly know its model number (like AU6989SN or AU6998AN). However, countless users are met with a puzzling screen that says: .
When a USB flash drive based on an Alcor Micro controller malfunctions, diagnostic software like or Flash Drive Information Extractor frequently returns a highly specific error string: Controller Part-Number: Unknown [FA00] - F/W FA04 . This signature indicates that the controller is trapped in a generic boot or error state and cannot communicate with the flash memory chips.
The flashing tool structure lacks internal data layouts for multi-bus channels. Hardware Troubles: Forcing Factory Test Mode Follow these
First, let’s translate the cryptic string. When Windows says "Alcor Micro unknown fa00 f w fa04," it is actually giving you specific clues.
Re-plug the USB stick. If it still doesn't appear, press . 3. Flash the Firmware
To resolve the "Unknown FA00" status, you must force the controller into a state where it can be reflashed using a compatible Alcor Micro Mass Production Tool (AlcorMP) .
Standard Windows formatting often fails for this error. You must use specialized recovery software: AlcorMP (Mass Production Tool)