Okay good thing I asked.
First thing take a look and read this info below,
Flash Under Operating System
1. Please make note of any settings you have changed in the BIOS Setup utility. They may have to be re-entered after updating the BIOS. (disregard unless you have made any)
2. Click on the Start button and type cmd.exe. Right-click on the cmd.exe application and select run as administrator to open the Command Prompt with Administrator privilege. (this should automatic happen after the download completes)
3. In the "Command Prompt" window, change to the directory where the above files were extracted. The command to go to the location is "cd C:\SWTOOLS\FLASH\O3TJYnnUSA", where "nn" represents the two digit flash level.
4.Enter the command "flash.cmd" and press the Enter key to start the flashing process.
5. You may first see a confirmation prompt "Proceed with BIOS update now?". Click "Yes" to continue.
6. You will see the prompt "Would you like to update the Serial Number?". Input "n" and press Enter.
7. Then you will see the prompt "Would you like to update the Machine Type and Model?". Input "n" and press Enter again. Then the BIOS update process will start.
8. The update may take up to 2 minutes. Do not power off or restart the system during this procedure! After the Windows update process ends, the system will automatically reboot to continue the flash process.
9. After the system reboots, the BIOS update process will continue with a simple graphic UI. When the BIOS update process ends, the system will reboot automatically.
The BIOS update process ends with above nine steps.
Edit: The above can also be found on the BIOS update page and could be helpful to make and printout a cheat sheet.
Than forget about using Lenovo Update or Vantage go to the support page for some or all updates.
But here for convenience is the BIOS update O3TKT46A released 24 Jul 2019.
Edit2: After the BIOS is updated you can safely remove C:\SWTOOLS\FLASH from the hardrive as it is no longer needed.