You can find the latest BIOS and driver updates for VAIO laptops on the official page:
Here are some specific features you might expect from a BIOS update for the Sony Vaio PCG-81114L: sony vaio pcg81114l bios update link
: The Official Sony Support Search allows you to enter your specific VPCF model name to find the latest BIOS. You can find the latest BIOS and driver