Running the wrong update or losing power to your laptop whilst the BIOS is being updated can seriously damage your machine.
If you are not confident doing the update yourself you should contact your laptop manufacturer's local service specialist.
Press Window Key R to access the “RUN” command window.
Then type “msinfo32” to bring up your computer’s System Information log.
The update utility is often part of the download package from the manufacturer. If one is not available, you can still use the USB stick to update your BIOS in an UEFI environment, if such is a feature of your motherboard.