This string appears when using tools like , USBDeview , or AlcorMP . The tool recognizes the Alcor controller family but can’t pin down the exact model (e.g., AU6989, AU6990, etc.). FA00 often points to a mask ROM mode – meaning the drive failed to load its normal firmware and is now in recovery/boot mode.
Navigate to trusted firmware repositories like the Alcor Micro Hub on USBDev.ru .
: Set the scan mode to Low Level Format . This thoroughly scans for bad blocks and rewrites the translation layers.
: Use a utility like ChipGenius or Flash Drive Information Extractor to find the precise Controller Model (e.g., AU6989SN-GTC) and Flash ID (FID). alcor micro unknown fa00 f w 3613 updated
What (e.g., AU6989SN) did ChipGenius find? Are you running this on a 32-bit or 64-bit Windows machine?
Often tied directly to the FA00 error is a missing Flash ID (FID). If the controller cannot communicate with the physical NAND chips (where your data is actually stored), it will report an empty string or a generic loop of dummy hex characters. Phase 1: Pre-Repair Checklist & Critical Safeguards
If your flash drive has become write‑protected, shows 0MB capacity, or fails to be recognised properly, the most effective solution is a using Alcor’s official mass‑production utility, AlcorMP (often called the "量产工具"). This tool can reset the controller, perform a factory‑level format, and remap bad blocks. This string appears when using tools like ,
To help find the right version of the flash tool, what did ChipGenius find under the FA00 error? If you hit a specific error code during formatting, let me know so we can adjust the settings. Share public link
: Visit specialized repositories like USBDev.ru to find the version of AlcorMP that supports your specific chip and the 3613 firmware. Prepare the Environment :
Alcor Micro is a prominent Taiwan-based fabless IC design company that specializes in semiconductor solutions for PC peripherals and consumer electronics. Their controllers are the "brains" of millions of USB flash drives and card readers. When a system identifies a device as "Alcor Micro Unknown," it usually means the generic firmware is visible, but the specific branding (like SanDisk or Kingston) has not been initialized or has been corrupted. 2. Understanding the Status String Navigate to trusted firmware repositories like the Alcor
Insert the faulty Alcor Micro flash drive into a directly connected to your motherboard. Avoid using front-panel case ports or unpowered external hubs.
Temporarily disable active antivirus suites, as the low-level Alcor execution filter driver ( mpszfilt.sys ) can sometimes trigger false positives.