The drive suddenly becomes read-only. You cannot delete, add, or modify files. Often, the controller enters a “safe mode” due to bad blocks or wear leveling issues. The MPtool can reset the controller and release write protection.
ASolid (also known as ASolid Technology Co., Ltd.) is a Taiwanese controller manufacturer. While names like Phison, Silicon Motion, and Alcor get more attention, ASolid controllers are surprisingly common in budget and mid-range USB drives — especially in OEM and no-name brands. asolid usb mptool
Common ASolid controller models:
Critical Warning: Before you download any MPtool, you must identify the controller. Asolid MPtools are controller-specific. Using the wrong tool will not work and may permanently brick your drive. The drive suddenly becomes read-only
Here is how to identify your USB drive’s controller: The MPtool can reset the controller and release