: Changing a drive's configuration (e.g., converting to a USB-HDD mode) can cause the utility to stop detecting the drive permanently.
: If the drive isn't recognized, you may need to "short" specific pins on the NAND chip to force the controller into a manufacturing state. phison ps225109 patched
If your USB drive shows 0MB, is write-protected, or fails to format, patching the Phison PS2251-09 (PS2309) controller can restore full functionality. This patch unlocks the MP tool, bypasses factory bad-block hiding, and allows you to perform a low-level format. Use with the correct version of MPALL or Phison MP Tool (v3.83 or newer) after applying the patch .bin file. : Changing a drive's configuration (e