: The tool installs a special low-level filter driver to communicate with the controller. If the program crashes or is closed improperly, this driver can stay active and disable all other USB 2.0 ports on your computer. To fix this, you may need to manually remove the mpfilt driver from the Windows registry.
Last updated: October 2025 – Verified for Windows 11 22H2
The (including variants like AU6989SN-GTC and AU6989SN-GTA ) is a popular USB 2.0 flash disk controller known for high performance with MLC and TLC NAND flash, often used in budget or generic-branded USB drives.
Note: If the tool does not show "Alcor," do not use this guide. Step 2: Download Free Alcor Micro USB Repair Tool (AlcorMP)
: Click Setup (S) . You may be prompted for a password; usually, leaving it blank works. alcor micro usb repair tool au6989sngtc au6998sn free
Finding the correct, clean version is the most critical step. The tool is version-sensitive; an older version might not recognize a newer flash chip. Successful versions reported for these controllers include:
: Click the Start (A) button to begin flashing.
You can find these tools on U盘量产网 (upantool.com) and other technical forums. Be sure to scan any downloaded files with an up-to-date antivirus before proceeding.
Your USB drive should now be fully functional with its original capacity. : The tool installs a special low-level filter
You must manually trigger . Short-circuit pins 29 and 30 on the NAND memory chip using a needle while plugging it into the PC to force a hardware reset.
, indicating a successful repair. You may then need to re-plug the drive to use it normally in Windows Explorer. Common Issues Resolved Write Protection
The key takeaways from this guide:
: This specialized flash tool repository maintains a dedicated Alcor tool section. A direct download link known to work with AU6989SN-GTC and AU6998SN controllers is available through their download system. Navigate to upantool.com and search for "AlcorMP" or "AU6989SN-GTC" to find current versions. Last updated: October 2025 – Verified for Windows
Once downloaded, extract the ZIP or RAR archive into a dedicated folder on your local drive (e.g., C:\AlcorMP\ ).
A: While the tool can create a CD-ROM partition or a "public" and "security" partition, it is not the recommended method for creating standard bootable Windows/Linux installers. The tool is meant for repair, not everyday drive creation.
: Select Speed Optimize for a faster drive, or Capacity Optimize if the flash sectors are heavily damaged.
Inside the setup menu, configure the following tabs to ensure a successful format:
: Once the status turns green and shows "OK," unplug the USB drive first, then close the software. Important Precautions