[REQUEST] Lenovo IdeaPad S540-15IWL GTX BIOS Unlock

Hi all! 
I need to unlock the BIOS of my Lenovo Ideapad S540-15IWL GTX laptop.

Laptop model: Lenovo Ideapad S540-15IWL
Bios version: bwcn19ww
Link to bios: https://download.lenovo.com/consumer/mob...cn19ww.exe