Gigabyte Z170-HD3 Bios/Microcode Question

[Cubbitt]

I'm getting ready to build my first major PC from scratch. I'm a little inexperienced in the building process itself but I do have a good bit of experience and general PC knowledge. My questions are in regards to what bios I should flash on to my motherboard. I am planning on overclocking a non-k processor with a bios and guide that I've found on a website called overclocking.guide - I only recently found out that when I decide flash my bios to the one downloaded it will disable the IGPU. I'm fine with this, but I can't have it disabled immediately. I don't have enough for a good discrete GPU yet and I have to have this computer for college work too. I have several concerns I'm going to address and I'm not sure how many or if any are valid, so please bear with me on this long list. 1) Gigabytes website shows several bios versions, one of which states it "updates microcode" but shows the release date of October of 2015. Surely this is a different microcode update than the one I've read about that will disable bclck overclocking right? 2) If it does update the microcode does that mean that version and any of the later versions likely do the same? 3) What are the chances that the microcode was also already installed on the board and will update the CPU microcode on the initial boot regardless of what I flash it to? And would it matter if I temporarily installed say a 1151 Pentium and then flashed it and used my main CPU afterwards? 4) Do Ice cubes really melt in the winter? 

 

I realize that this is all extremely situation specific and complex but I'm hoping that someone with more experience and knowledge into this sort of thing will be able to offer some kind of suggestions to a possible solution.