The tool is designed for "all-in-one" repair and maintenance:
| Error Message | Likely Cause | Fix | | --- | --- | --- | | Device not found (Error: 0xE001) | Driver not loaded or USB cable faulty | Reinstall WinUSB driver; use a shielded USB 2.0 cable. | | Box not detected (USB conflict) | Another tool (Odin, SP Flash) holds the port | Close all other flashing software; reboot PC. | | Handshake timeout after 5 seconds | Battery not removed (old LG/Samsung) | Physically disconnect battery; use power from USB jig. | | Checksum mismatch at block 0x7FFF | Corrupted RAM or faulty NAND | Lower read speed in Settings; increase timeout to 10 sec. | | Access violation at address 0x004B3F12 | Running on Windows 10 without compatibility mode | Set MRT.exe to Windows 7 mode + run as Admin. | Mrt Key Ver 3.95