Run the diagnostic tool and look for the (Silicon Motion) and Controller Part Number (e.g., SM32x). Step 2: Download the Correct Tool Version
You must verify that your USB drive actually uses an SMI controller before launching MPTool.
Official documentation does not exist. You rely on:
: Select an appropriate language based on the tool and device requirements (common choices include Python, C/C++, scripting languages). smi mptool sm32x sm34x smi mass production tool full
Using a sewing needle or a fine-tipped tweezer, carefully bridge (short) two adjacent data pins on the NAND chip.
The "Full" version of the tool typically includes all necessary firmware files, database configuration files ( SM32x.dbf , SM34x.dbf ), and support for multiple flash memory types (TLC, MLC, SLC, QLC) from manufacturers like Micron, Toshiba, Hynix, and Intel.
The is a powerful utility for the SM32x and SM34x families. If you have a "bricked" flash drive with a Silicon Motion controller, this is often the only software capable of fixing it without professional hardware tools. However, identification is key—always verify your controller model with ChipGenius before attempting to flash. Run the diagnostic tool and look for the
The actual low-level formatting and firmware flashing are robust. Here's what it excels at:
The tool is distributed in ZIP/RAR archives on obscure forums (USBDev, MyDigitalLife). Antivirus software will flag it as a hacktool (which it technically is). You must disable Windows Defender, run as Administrator, and often use an older Windows 7/10 machine.
This series covers the vast majority of mainstream USB 2.0 and USB 3.0/3.1 flash drives. You rely on: : Select an appropriate language
: Once the drive is detected, click Start . The tool will erase the NAND, test the memory, and flash the new firmware. Critical Warnings
This differs from basic OS-level formatting, which simply erases file tables without addressing controller-level defects. And for SM32x/SM34x controllers, . While others like Dyna MPTool exist for specific low-quality flash chips, MPTOOL is generally the preferred starting point.
| Controller Series | Common Models | Typical Interface | | :--- | :--- | :--- | | SM32x (Legacy) | SM321AC, SM321BB, SM321BC, SM324BC | USB 2.0 | | SM325x | SM3252A/B, SM3254AE, SM3255AA/AB, SM3257AA, SM3257ENBB | USB 2.0 | | SM326x (USB 3.0) | SM3260AD, SM3267AC, SM3267AE, SM3268AB | USB 3.0 | | SM328x (USB 3.1/3.2) | SM3280AB/BB, SM3281AB, SM3282AB | USB 3.1/3.2 | | SM34x (Specialized) | SM341BA | (Varies by application) |