Alcor Micro Unknown Fa00 F W Fa04 Fixed [verified] 🎁 Must Watch

Decoding the Error: "Alcor Micro Unknown FA00 F/W FA04 Fixed" – A Complete Guide to USB Drive Recovery

By: Data Recovery Experts

5. Recommended Actions (if you are trying to repair the drive)

  1. Identify exact controller – Open the drive or use ChipGenius / USBDeview to get VID/PID (likely VID_058F Alcor).
  2. Use correct AlcorMP version – Wrong version will show FA00 or Unknown.
  3. Check flash chip markings – If visible, match with tool’s FA04 profile.
  4. Apply “FA04 fixed” in MP tool:
    • In settings → Flash Selection → choose FA04 if listed.
    • Set Mode = Fixed (not removable).
    • Set capacity manually if auto-detect fails.
  5. Low-level format – Use “Start (F9)” or “Format” in AlcorMP.

1. Overview

The string indicates a USB mass storage device using an Alcor Micro controller. The codes FA00 and FA04 typically refer to controller/firmware IDs or status codes from a flashing or repair tool. alcor micro unknown fa00 f w fa04 fixed

Steps to fix (general procedure):

  1. Identify exact controller model – Use Alcor Micro’s AlcorMP tool or ChipGenius.
  2. Obtain correct firmware file – FA04-specific .bin or .fw for that controller.
  3. Use Alcor’s low-level formatting tool – e.g., AlcorMP.exe, AUTOEVER, or MpTool.
  4. Short the device (if necessary) – Some cases require bridging test points to force bootloader mode.
  5. Flash firmware – Select the FA04 firmware, apply, and safely eject.