The drive may show "0 bytes" or "No Media" in Windows Disk Management.
Sometimes the Flash ID (FID) also shows as "Unknown" or all zeros/nines, which suggests the controller can't even "see" the memory chips it's supposed to manage. How People "Fix" the Story
Click on the or Configuration button. If prompted for a password, leave it completely blank and click OK. alcor micro unknown fa00 - f w 3613
: Refers to the version of the firmware currently reported by the chip. Firmware mismatches often lead to "Unknown Device" or "Device Descriptor Request Failed" errors in Windows Device Manager. Common Issues and Recovery
A: No. It is legitimate hardware. However, malware sometimes uses "Unknown Device" as a hiding place. Run a Malwarebytes scan to be safe. The drive may show "0 bytes" or "No
Disconnect the device, restart your PC, and reconnect the device to a different USB port. Summary Table: Troubleshooting Steps Potential Outcome Run Flash Drive Information Extractor Confirms controller type/memory type 2 Download matching AlcorMP Provides firmware flashing tool 3 Run AlcorMP.exe Reflashes firmware, clears error 4 Check USBDev forum Finds specific solutions for F/W 3613 Important Precautions
For those interested in a more technical exploration of the Alcor Micro Unknown FA00 - F/W 3613, we can examine some aspects of its design and functionality: If prompted for a password, leave it completely
This will show if the device enumerates at all and what descriptors it sends – useful for reverse engineering or confirming hardware death.
Click "Start" (or "Rebuild" in some versions). The tool will attempt to write new firmware and re-partition the drive. Method 2: Use FC MpTool (For Specific Flash Drives)
Connect the drive directly to the motherboard USB ports on the back of a desktop tower. Front panel ports often lack stable voltage.