Alcor Micro Unknown Fa00 F W 3613 Updated May 2026

If the device shows a "Bad Block" error (e.g., code 30400 or 30700), go to and select Low-Level Format with Capacity Optimize .

If software cannot find this, you may need to physically open the USB casing and read the model number printed on the square controller chip. :

: Electrical or mechanical damage to the NAND chip can result in an "Unknown" status because the controller can no longer read the chip's unique ID. Troubleshooting and Repair Steps alcor micro unknown fa00 f w 3613 updated

Look for "L74" or "D3/eD3" specialized editions if you are using high-capacity Transcend or generic 32GB/64GB drives. : Run the AlcorMP utility as an Administrator.

The "Unknown [FA00]" status is often a generic placeholder for a hardware or software communication failure between the USB controller and the NAND flash memory. If the device shows a "Bad Block" error (e

To attempt a repair, you must match the physical controller chip with the correct Mass Production (MP) tool. :

If the drive is completely unresponsive ("Unknown" or not appearing at all), some technicians "short" the data pins on the NAND flash chip while plugging it in to force the controller into "test mode," allowing the firmware to be rewritten. Summary Table: Common Error Codes Error Code Likely Solution Unknown Flash Error Controller hung; try a different AlcorMP version. 30700 Bad Block / No Binary Missing firmware file for your controller/memory combo. 20000 Invalid Device Tool does not support this specific hardware revision. Troubleshooting and Repair Steps Look for "L74" or

Visit dedicated firmware repositories like USBDev.ru or Alcor Infotech to find an AlcorMP version that explicitly lists your controller model or flash memory type.

Use a tool like or Flash Drive Information Extractor to find the specific Controller Part-Number (e.g., AU6989SN, AU6998) and the Flash ID.

: This process will permanently erase all data on the drive. Shorting the Pins (Advanced Only) :