Lenovo — U1 Tool [top]

on the target machine and follow the on-screen prompts to input the new system data.

This article is for informational purposes only. Modifying firmware carries risk. Always follow official Lenovo documentation for your specific model. lenovo u1 tool

And then, someone found the Tool.

: Its main function is to write or update the following motherboard identifiers: on the target machine and follow the on-screen