Alcor Micro Unknown Fa00 F W Fa04 Fixed //free\\ Now

This is a fascinating technical topic. The search term you provided refers to a specific hardware issue involving Alcor Micro USB Card Readers (commonly found in laptops from Dell, Lenovo, and Asus) and a discrepancy in how the Windows Registry identifies the device when drivers are missing or corrupted.

Here is a technical "white paper" style breakdown of the phenomenon, the hardware behind it, and the fix. alcor micro unknown fa00 f w fa04 fixed

3. Root Cause

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

This document addresses an issue observed with USB storage or card reader devices based on Alcor Micro controllers (commonly AU6xxx or AU8xxx series). The problem manifests as a device reporting a hardware/firmware ID of "FA00" – an unknown or invalid state – which is corrected by applying a firmware update that results in a "FA04 fixed" status. This is a fascinating technical topic

Step 4: Post-Fix Verification

  1. Close the MP tool.
  2. Unplug the USB drive.
  3. Reboot your computer (to reset the USB stack).
  4. Plug the drive back in.
  5. Open Disk Management (diskmgmt.msc). You should see the drive as "Unallocated" or a fresh empty volume.
  6. Initialize it as MBR or GPT, create a new simple volume (NTFS/FAT32), and assign a drive letter.

Congratulations. Your "Alcor Micro Unknown FA00 F/W FA04" is now fixed. Incomplete factory programming