The for controllers like AU6989SN-GTC Go to product viewer dialog for this item. and Go to product viewer dialog for this item.
These problems point to corrupted or heavily degraded flash memory blocks. Rather than attempting standard logical formatting, users must reset the hard-coded instructions within the physical Alcor microchip. Step 1: Identify Your Exact USB Controller
: A Chinese software download portal offering AlcorMP versions including v16.11.01.00, which explicitly lists AU6989SN-GT/GTA/GTB/GTC in its supported controllers.
Alcor Micro does not host a public consumer download portal. Instead, technical communities archive these tools. Look for trusted firmware repositories like or UsbDev.ru to download the utilities for free.
Before running the repair tool, you need specific details about your NAND flash memory. alcor micro usb repair tool au6989sngtc au6998sn free
Tip: Download a few different chronological versions (e.g., AlcorMP 2014, 2015, and 2016 versions) of the tool. If an older version throws a "Flash ID not supported" error, move to a newer version that includes the database definitions for your specific memory chip. 🛠️ Step 3: Step-by-Step USB Repair Process
: Reinstalls or updates the firmware controlling the USB's hardware logic. Compatible Controllers
Often considered the successor or a variant of the AU6989 series, the AU6998SN offers slightly better error correction and support for newer NAND technologies. However, both chips share a critical feature: they are vulnerable to logical corruption, power surges, and improper ejection—but they are also highly recoverable.
The system detects the device but displays a "No Media" or "0 Bytes" error. The for controllers like AU6989SN-GTC Go to product
For repairing USB flash drives with the or AU6998SN controllers, the standard free software is the AlcorMP (Mass Production Tool). This tool is designed for "re-flashing" or restoring factory settings to drives that are write-protected, showing 0-byte capacity, or failing to be recognized by Windows. Key Tool Features
When firmware corruption occurs, standard Windows formatting tools fail because they cannot access the controller's internal configuration. Flash drive factory tools like bypass the operating system layers to re-flash the controller. Prerequisites Before Repairing
The version you need for the and AU6998SN is typically AlcorMP version 6.21 or newer , although older versions like 6.15 or 8.xx may also work.
The tool version must support your specific controller and flash memory type. Instead, technical communities archive these tools
: Find the version of Alcor MP that supports your controller. Resources like are commonly cited for hosting these legacy utilities. Run as Administrator : Right-click the executable and select Run as Administrator to ensure the tool has low-level access to the hardware. Start Formatting
When the progress bar reaches 100% and shows in green:
Bad Block Management
As one repair log noted, "When your Alcor-based drive suddenly becomes a 'brick' that can neither be read nor formatted, that anxiety is deeply felt. But after intensive testing and version comparisons, the key lies in matching the mass production tool version to your flash memory chip" .
