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

This stands for . This is a specific build of the low-level code that controls how the Alcor chip talks to the NAND flash memory chips. In a failed state, the drive reports this firmware version, but the OS cannot understand the actual storage geometry (block size, page size, number of blocks). Hence, Windows labels it "Unknown."

You plug in your USB flash drive. You hear the familiar "ding" from Windows indicating a connection. But then, instead of seeing a new drive letter in "This PC," your heart sinks. You open , and under "Universal Serial Bus controllers" or "Other devices," you see a yellow warning triangle next to a label that reads: alcor micro unknown fa00 f w fa04 fixed

By understanding the hardware ID, using the correct , performing a careful pin short to force ROM mode, and reflashing the firmware, you can move your drive from "Unknown" to "Fixed." This stands for