SHIVER ME TIMBERS!

The above linked Primo from the oddly worded link is WORKING!

sort of.

I added the TomTom maps, made the sys changes, and loaded with the included apk. I didn't unzip the files that were still zipped after unRARing.
From my desktop, I transferred the folder with the TomTom maps added in Content folder to an SD card.
Put that SD card in my radio and ran the apk file that is external to the iGO folder in the download.
iGO loads, gives no warning screens, and functions as expected.
EXCEPT the screen keeps flashing to black for a few milliseconds every couple seconds, seemingly more as I am moving but I could be wrong, and the program stalls to black after a few minutes.
Going through settings, the "custom vehicle" selection seems to really make it angry and more flashy; and it shuts down if I try to select any other vehicle cursor other than default, but it also shuts down if I don't try to change vehicle, it just takes longer.

There are TWO variables to my previous attempts: I added TomTom maps, and I didn't unzip the folders (data, save_backup) that were left zipped after unRARing. These are the two things I did this time, and iGO loaded and installed and runs...for a while.
Maybe it's the map pack. I'll try the Here maps and see if that solves it.
Maybe it's the zipped folders. I'll try unzipping and pasting the contents in their place.
Maybe I'll even read all the links and suggestions yet again; with comprehension glasses on.

(I'm sharing the adventures of my journey in hopes that it will help future travelers having a similar issue, with similar knowledge of these devices and software)