The Phison MPtool (Mass Production Tool) is a low-level utility developed by Phison for factory technicians. It bypasses standard Windows drivers and communicates directly with the controller chip to:
Warning: This is not a simple format tool like SD Formatter. Using it incorrectly can destroy partition tables, reduce capacity, or permanently brick the drive.
| Parameter | Outcome | |-----------|---------| | Detection | Requires specific driver (Filter Driver) installation. Drive not detected if in "Removable" default driver. | | Firmware Matching | Critical. Using wrong firmware (e.g., PS2251-03 FW on PS2307) bricks controller permanently. | | Bad Block Handling | Successful remapping. Drives with >5% bad blocks fail production and show zero capacity. | | Speed Recovery | Drives slowed due to firmware corruption regained USB 3.0 speeds (approx. 80–120 MB/s read) after re-flash. | | Success Rate | ~70% for logical issues; ~30% for hardware failures (e.g., broken crystal oscillator). |
Extract the MP Tool to C:\MPTool\PS2251-07. Avoid long paths or desktop folders (Windows security can interfere). phison ps2251-07-ps2307- mptool
The tool will go through:
If you see Red "Fail" :
This is the most frustrating part of the process. MP Tools are leaked by factories, not released officially. You will find many fake or virus-laden versions. Programming fails midway:
Trusted version numbers for PS2251-07:
Retailers use the MP Tool to brand drives. Under Setting → Other:
Warning: Faking a larger capacity (e.g., forcing 128GB on 16GB NAND) will destroy the drive within weeks. Do not use "Capacity Override" unless you understand the risk. Drive shows wrong capacity (fake capacity):
In the world of USB flash drive repair and data recovery, few names are as ubiquitous as Phison. The Phison PS2251-07 (often labeled as PS2307 or PS2305 on the casing) is one of the most common USB 3.0 controllers found in flash drives from brands like Kingston, Corsair, ADATA, Patriot, and SanDisk (OEM models).
If you are reading this, you likely have a dead USB drive. It shows 0 bytes, is unrecognized, has corrupted capacity (e.g., 8GB showing as 2MB), or refuses to format. The solution is the MP Tool (Mass Production Tool)—a low-level utility that speaks directly to the controller’s firmware.
This article provides a deep dive into identifying, sourcing, configuring, and using the PS2251-07 MP Tool to resurrect your drive.