BIOS update or repository for LarkBook X (N5100)

Hi, I wanted to ask how update the bios and I have read about modified bios versions for the Fn key and others too, do you have anything that can help me?
I had also wrote an email without receiving a reply…

Hello, I am looking for a factory BIOS image for LarkBook X
The ID string is ZW-BI-14-H133JR210-JC60A-063-H
Can someone kindly provide me a link to it?
I have also sent an email to yesterday
Thank you in advance!