Ok, from what i've read, it's like a new version for the r4, i believe the one i have is something like 1.18. Anyways, i'm pretty sure installing it into the r4 isn't much of a problem, there are forums here where people point out links to places where there are simple instructions to put them on. So thats not what i need, my only question is that should i get rid of my current firmware and replace it with YS Menu or is YS Menu more of something I add with the firmware?