The error isn't necessarily a death sentence for your USB stick. In most cases, it’s a software "confusion" that can be cleared by re-flashing the controller. Just remember: using an MPTool will wipe all data on the drive.
The drive's light flashes rapidly but never initializes. How to Fix the "Unknown FA00 FW FA04" Error
Before downloading tools, you must know your specific chip model.
Under , ensure it matches what ChipGenius told you. Under Scan Mode , select "Low Level Format" for a deep fix.
Hit "Start" and wait. Do not unplug the drive. If successful, the status bar will turn green, and the "FA00" error will be replaced by the drive’s actual capacity. Why is my drive getting "Hot"?
If you’ve plugged in a USB flash drive only to find it unrecognized, or if you’ve gone digging into hardware IDs and found the strings or "FW FA04," you are likely dealing with a corrupted Alcor Micro controller.
Look for versions that mention support for or FA00 firmware specifically. Step 3: The "Hot" Recovery Process (Low-Level Format) Run as Admin: Open the AlcorMP.exe as an administrator.
Understanding the Alcor Micro "Unknown FA00 FW FA04" Error: A Troubleshooting Guide
Alcor Micro is a major manufacturer of USB flash drive controllers. When a drive is functioning correctly, it reports its real capacity and brand name. However, when the firmware becomes corrupted—due to improper ejection, power surges, or NAND wear—it enters a or a generic state.
In the context of flash drive repair forums, "hot" often refers to a "Hot Plug" method or a trending firmware fix for a specific batch of chips (like the AU6989 series) that recently hit the market. Common Symptoms