If Windows doesn't even see the FA00 device, you need to force the controller into "ROM Mode."
Even if it says FA00 , use ChipGenius. Note the Chip Vendor and Chip Part-No . It might say AU6989SN or AU6990 . Write this down. alcor micro unknown fa00 f w fa04 fixed
Download a modified version of or FC MpTool that matches your physical controller. If Windows doesn't even see the FA00 device,
When Windows Update pushes a generic "USB Mass Storage" driver to an Alcor device, the device enters a logic trap: Write this down
: Search for an AlcorMP or Alcor recovery tool version specifically compatible with your controller and Flash ID. Reliable sources for these tools include community sites like USBDev.ru .
The Alcor Micro controller series identified by the internal codes and FA04 typically refers to a generic USB flash drive controller often found in mass-produced promotional USB drives or older flash storage devices. The designation "FA04 Fixed" suggests a specific revision where a firmware instability or compatibility issue—common in these generic controllers—was resolved. While these controllers are rarely sold as retail consumer products, they are the backbone of many "no-name" USB sticks.
The "FA00" error is picky. If one version of AlcorMP fails with an "Unknown Flash" error (Error 30400), you must try a different release.