: This is often considered an internal or confidential tool for authorized service engineers.
USB drives formatted with the Lenovo usbfmtpw utility are automatically given top boot priority by the BIOS, bypassing standard boot order settings.
The U1 Tool is a proprietary BIOS utility designed to flash essential identification data onto a Lenovo system board. When a motherboard is replaced, it often arrives as a "blank" unit without specific identifiers. The U1 Tool allows you to write: Machine Type and Model (MTM) Product Name (PN) UUID