I do appreciate your help.
I feel rather silly, actually.
I hadn't noticed until just an hour or so ago, the first file I downloaded wasn't right. I'm not sure what I downloaded or from where, but it wasn't all there.
Once I realized this, I deleted it and started fresh from scratch, and, behold!, I had it handled in no time.
Once my file issue was resolved, everything was just as easy as jailbreaking.
Not sure why I was trying to make it more complicated than is.
I'm all good, and my goal is accomplished.
Thanks again for the video and replying here.