Hi Stanislav_K
I don't think you need a new Bios chip.
Your MB is a fairly new release and I could not find any version update from ASUS Support.
The Bios file once downloaded has to be renamed with the correct X99~~.CAP file name to suit your specific MB.
I have tried to find your specific file name without success and ASUS support should know it for your X99-WS/IPMI Motherboard
You have Bios flash utility on your rear IO panel which is the best method to update your Bios file with a USB stick.
I do know Asus X99-Pro/USB3.1 file is X99PUB31.CAP but not sure with yours.
EDIT: They have withdrawn the Bios file from the Support site, so something is wrong with it.