The "Alcor Micro Unknown FA00 - F/W 3613" error is a common headache for users dealing with corrupted USB flash drives, generic thumb drives, and SD card controllers. This specific firmware (F/W 3613) and chip ID (FA00) indicate that your computer recognizes the hardware interface but cannot communicate with the memory chips inside, often resulting in a "Disk is Write Protected" or "Please Insert Disk" message.
Most FA00 errors can be fixed by the "Optimized Capacity" or "Default" settings. Start: Click the "Start" (S) button.
This is the controller ID. It tells the software which instruction set to use. alcor micro unknown fa00 - f w 3613
The NAND flash chip is wearing out. You can try setting the "Scan Level" to a deeper cycle in the AlcorMP settings to "wall off" the dead sectors.
Alcor Micro is a massive manufacturer of USB bridge controllers. Their chips are found in everything from high-end Transcend drives to unbranded "freebie" sticks. The "Alcor Micro Unknown FA00 - F/W 3613"
You are using an older version of the MPTool. Look for a "New Style" (ALCOR_U2_MP) version of the software.
Download a tool called or Flash Drive Information Extractor . Plug in your USB drive. Start: Click the "Start" (S) button
Reliable databases for these tools include sites like or USBDev . Step 3: The Repair Process (Flashing) Warning: This process will destroy all data on the drive. Run as Administrator: Open the AlcorMP.exe file.