A failing capacitor or cracked NAND die can cause the controller to draw excessive current ( >500mA on USB 2.0), triggering host-side overcurrent protection and a "hot" status.
If you just want to salvage the hardware, follow this diagnostic sequence: Step 1: The Temperature Check
: Do not use generic tools. Visit specialized databases like FlashBoot.ru
+-------------------------------------------------------+ | AlcorMP (Mass Production Tool) [ _ ][ X ] | +-------------------------------------------------------+ | [ G: ] Alcor FA00 -> Ready to Flash | | | | +------------+ +------------+ +---------------+ | | | Setup (S) | | Start (A) | | Driver (D) | | | +------------+ +------------+ +---------------+ | +-------------------------------------------------------+ alcor micro unknown fa00 fw fa04 hot
If successful, the status block will turn and show a "Success" message. The overheating should drop instantly as the controller stops looping its execution stack. 4. Hardware Bypass: The "Test Mode" Short-Circuit Method
For FA00/FA04 identifiers, users often find success with AlcorMP editions by nat27 which are optimized for generic or "fake" Alcor chips.
Once the tool reports a success, safely eject the USB drive and reinsert it into your PC. The drive should now be recognized with its full capacity. You can then format it using Windows' native disk management tool. A failing capacitor or cracked NAND die can
Affected components
Identify the larger rectangular chip (the NAND flash), not the smaller square Alcor controller chip.
To fix a firmware corruption like FA04, you must "re-flash" the controller using the specific AlcorMP version designed for your chip. The overheating should drop instantly as the controller
This is the most specific piece of the puzzle. "F/W" stands for Firmware, and "FA04" is its version identifier. The firmware is the low-level software that dictates how the controller chip operates. Importantly, different firmware versions work with different controller chips. The combination of [FA00] and FA04 is a strong hint, but it's not the whole story. As we'll cover later, the most reliable way to choose the correct tool is often by looking at the , which is a unique identifier for the memory chip itself.
: This indicates the code string of the active microcode layer. When paired with FA00 , it implies the controller has dropped out of its standard operational firmware loop and defaulted to a low-level bootloader/hardware test mode.
If the device is not overheating dangerously but is still showing as "Unknown," you can attempt software recovery.
Download ChipGenius to find your specific Controller Part Number (e.g., AU6989SN).