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  • Flexible rollforming line for purlin profiles
    LAMIERA 2022 Press release

    Alcor Micro Unknown Fa00 F W Fa04 !!hot!!

    Published on 07/04/22

Alcor Micro Unknown Fa00 F W Fa04 !!hot!!

Alcor Micro controller

When your computer identifies a USB drive as "Alcor Micro Unknown FA00 F/W FA04," it indicates that the firmware on your (typically the AU6989SN series) has become corrupted or is in an uninitialized state. This error often manifests as a "No Media" or "0 Byte" capacity issue. Understanding the FA00 F/W FA04 Error

  • In Alcor MPTool, FA is often a flash ID prefix for certain flash chips (e.g., Micron, Intel, or Hynix).
  • FA00 could be a manufacturer code + device code read from the flash’s ID register.

    Troubleshooting Steps

    • Example: FA = Manufacturer (e.g., Samsung? Actually FA is more common for Micron/Intel 3D TLC).
    • 00 = sometimes a placeholder or unknown.

    F W:

    This almost certainly stands for "Firmware" (sometimes abbreviated as FW). The presence of "F W" suggests that the OS is reporting a firmware-level problem. alcor micro unknown fa00 f w fa04

    • Oscillator Check: Find the 12.000MHz or 24.000MHz crystal (silver oval component). A working one should have a voltage around 0.5V to 1.6V on each pin relative to ground. Zero volts or full 3.3V means the oscillator is dead.
    • Voltage Check: Measure across the capacitor near the Alcor chip. You should see 3.3V (USB VBUS stepped down). If you see 5V directly on the controller, it’s fried.
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