You may need to trigger EDL (Emergency Download) mode using specific hardware button combinations.

ASparkOfFire/lenovo-u1-tool: Lenovo Uone Tool for ... - GitHub

Lenovo U1 Tool , also known as the Lenovo Uone Tool Golden Key U1

: Specific versions (like the WinWOS batch script) allow updating information on ARM-based laptops (e.g., Yoga C630) directly through Windows PowerShell with administrator privileges.

The Lenovo U1 Tool is a proprietary maintenance utility designed for authorized service technicians. It interfaces directly with a laptop’s basic input/output system (BIOS) or Unified Extensible Firmware Interface (UEFI).

Turn off your Lenovo device entirely. Depending on what you are trying to accomplish, you will need to boot the phone/tablet into a specific state while connecting it to the PC via USB:

The Lenovo U1 Tool is an internal service utility used to write data directly to a machine's EEPROM chip. Think of it as a digital birth certificate programmer for Lenovo hardware. Core Supported Hardware Identifiers

Lenovo U1 Tool Online

You may need to trigger EDL (Emergency Download) mode using specific hardware button combinations.

ASparkOfFire/lenovo-u1-tool: Lenovo Uone Tool for ... - GitHub lenovo u1 tool

Lenovo U1 Tool , also known as the Lenovo Uone Tool Golden Key U1 You may need to trigger EDL (Emergency Download)

: Specific versions (like the WinWOS batch script) allow updating information on ARM-based laptops (e.g., Yoga C630) directly through Windows PowerShell with administrator privileges. The Lenovo U1 Tool is a proprietary maintenance

Turn off your Lenovo device entirely. Depending on what you are trying to accomplish, you will need to boot the phone/tablet into a specific state while connecting it to the PC via USB: