[Request] Asus H170m-Plus adding BCLK back to the BIOS

[xaran526]

Hello,
I have some system based on H170m-Plus which I use daily. I don't really need better PC for now. I have paired it with i7-6700k and so far I was using BCLK with it, but few days ago I have decided to upgrade BIOS, what was a mistake  Because with newer BIOS Asus deleted BCLK option in BIOS (from what I discovered, it was because of Intel). I was looking throught internet to maybe try and unlock it by myself but I got stuck during whole process. Using AMIBCP I have discovered that in newest BIOS this function probably was not hidden but deleted and I don't feel much confidence in trying to add lines in Hex editor. I have looked in AMIBCP, the oldest BIOS that has BCLK option is v. 2002.
https://www.asus.com/us/supportonly/h170..._download/

I would be thankfull to whoever is able to provide a modified BIOS.
Flashing modified BIOS is in the same way through BIOS or I have to use different method (like this Intel tool)?

Last question - is it possible to add Resizable Bar to this mb? Like in this post:
https://winraid.level1techs.com/t/releas...ule/100235

Also going back with BIOS version is also OK for me, but from what I know, ASUS does not let you do it. Are there some other ways to do it safely?