U1 Tool New | Lenovo

The Lenovo U1 Tool (also known as the Lenovo Uone Tool or Golden Key U1) is a specialized diagnostic and maintenance utility primarily used by field technicians and advanced users to update a machine's Serial Number (SN), Machine Type Model (MTM), and Product Name (PN) in the UEFI/BIOS. This tool is essential after a motherboard (system board) replacement to ensure the hardware information matches the original chassis labels and to maintain valid warranty status. Key Features of the Lenovo U1 Tool

While the original U1 update utility was scheduled for "sunset" around August 2024, its functions have been largely integrated into the newer Lenovo Service Tool Center (LSTC) LSTC Integration lenovo u1 tool new

Part 5: List of Supported Lenovo Devices (New Tool)

The "New" version officially supports the following chipsets: MT6762, MT6765, MT6781, MT6833 (Dimensity 700), MT6877 (Dimensity 900), and MT8183. The Lenovo U1 Tool (also known as the

Tutorial C: Unlock Bootloader on Lenovo TB-J606F

1. Enable Developer Options on the tablet → Allow OEM Unlocking (even if grayed out, toggle it).
2. In U1 Tool New, go to "Unlock" → "Force Unlock (BROM)."
3. The tool will generate a patched preloader.bin.
4. Shut down the tablet. Press and hold Volume Up + Volume Down simultaneously, then plug in USB (BROM mode).
5. The tool will flash the patched preloader. Upon reboot, the bootloader status will show "Already unlocked."

Part 4: Step-by-Step Usage Tutorials

Here are the three most common operations with the new tool. Enable Developer Options on the tablet → Allow

Typical workflows

1) Updating BIOS/UEFI

1. Open Lenovo U1 Tool (Admin).
2. Select “Firmware / BIOS Update.”
3. Choose the device model or let the tool auto-detect.
4. Select recommended update package (the tool flags critical updates).
5. Review pre-checks (battery level, AC power, disk space).
6. Start update — tool verifies signature and checksum, then flashes.
7. System reboots; confirm version in tool logs.

Pros: