Click on (if available) and check under "Driver Updates" for any Alcor or Realtek devices. Install and restart your computer. 2. Reinstall Driver via Device Manager Right-click the Start button and select Device Manager .
For a detailed walkthrough on using Alcor Micro firmware tools to fix 'no media' or 0-byte errors, you can watch this tutorial:
Note the 4-digit hexadecimal values for (Vendor ID) and PID (Product ID). Standard Alcor chips usually present a VID of 058F and a PID of 6387 or 1234 . If it shows 0000 or 7777 , the drive is in a deep error state. Step 2: Choose and Configure the Correct Alcor MPTool
The physical memory chips have developed corrupted sectors, causing the controller to lock down. alcor micro unknown fa00 f w fa04 work
If Windows cannot find the driver, you must download it directly. Because these chips are used in many laptops (Dell, HP, Lenovo), the driver is often listed as a "Card Reader Driver."
Ensure matches your layout (Toggle to Single Channel if your flash drive has only one storage chip to avoid a dual-channel error).
Yes, but with a nuance:
This device is not broken. It is simply a piece of specialized hardware (usually a smart card reader for corporate security or a touchchip reader) that Microsoft does not have a generic driver for.
Historically, Alcor produced controllers like the and AU6254 . These are not flash memory chips; they are USB hub controllers that sit inside devices like multi-port USB hubs or even keyboards.
The "work" to fix these drives involves using specialized "Flash Extraction Tools" (MPTool) to reprogram the controller. This is not a standard format operation; it is a low-level firmware restoration. Click on (if available) and check under "Driver
For controllers marked as [FA00], users often recommend modified editions like AlcorMP by Nat27 which include expanded identifier databases.
The identifier Unknown [FA00] — F/W FA04 (or similar variations like FA02) typically indicates that a USB flash drive with an Alcor Micro
: Use a sewing needle or precision tweezers to bridge two adjacent data pin lines (typically pins 29 and 30, or 30 and 31 on the TSOP flash chip). Do not bridge power lines to ground. Reinstall Driver via Device Manager Right-click the Start
: If the drive is not recognized instantly, click the Driver button inside the AlcorMP interface, add your specific VID/PID combination (e.g., VID 058F , PID 1234 or 6387 ), and press Save InstallDrive .