ok i have downloaded winRAR and imgburn, downloaded and then extracted the 17.1, keycode and 27.1 and got three files for 17.1 (.ccd .img .sub), three for the nav key (.ccd .img .sub) and only one for the 27.1 (.img)

is this what i should have expected?

now what (.ccd .img .sub) do i burn to cd?

and i read somewhere that the mode must be 1 or 2 how do i do that?

lastly is v27 safe to use on my mkiii as i read somewhere certain version make the mkiii go wrong?