Yeah that guide is garbage and ruins your chance of getting a clean backup because of the SD Files. Can't believe it's been up for over a year and it's still not edited/fixed.
This guide is really really bad. If you extract the SD Files to your SD card when you run Hekate.bin instead of Hekate running it will attempt to boot something else (SX I think) and you get an error screen with a red pixel emoji and the word boot.dat (something like that) which almost certainly...