| Error Message | Cause | Solution | | :--- | :--- | :--- | | | Missing or wrong VCOM driver. | Reinstall MTK drivers and use a USB 2.0 port. | | Status_DA_Hash_Mismatch | Old DA file. | In tool settings, manually select DA_New_AntiHash.bin from the lib folder. | | BROM ERROR: S_SECURITY_AC_SOC | Secure boot enabled (OEM lock). | You must first unlock via official method or find a test point pinout for your board. | | Tool crashes on startup | Missing MSVCP140.dll | Install Visual C++ Redistributable 2015-2022 (x86 and x64). |
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
: Reconnect the drive, click "Run" in the utility, and boot the target laptop from the newly created USB. Important Considerations | Error Message | Cause | Solution |
Boot the target Lenovo machine from the USB drive and follow the on-screen prompts to input the new S/N or MTM. Verification: After updating, tools like Lenovo Vantage | In tool settings, manually select DA_New_AntiHash
: The modern tool automatically detects the system platform. It typically executes the ThinkPad Maintenance Utility for ThinkPad devices and the Golden Key Tool for other products like ThinkBook and desktops.