Need ASUS TUF Z270 Mark 2 Bios mod for i7 8700k

Recently just bought a Mobo w/ ram combo from ebay and I have the wrong cpu for the mobo. The board is a 200 series "z270" and the cpu is coffelake i7 8700k 300 series.
Any guide on how to complete this mod?

adding new microcode is only the beginning,please see helpful guides on this matter (should give you the idea behind)
[GUIDE] Coffee Lake CPUs on Skylake and Kaby Lake motherboards
[GUIDE] Fixing HT for Coffee Lake CPUs on Skylake and Kaby Lake motherboards (Z170, Z270)
and moreā€¦