how can i put an image into a directory

I am trying to put a factory image into a directory but after days of trawling linux forums I'm no nearer.help please.

I am trying to roll back my nexus 7 2012 from lollipop to kitkat using this method https://productforums.google.com/forum/ ... Y-mHhkaLeI

Using the terminal I have got a directory named Android installed but need to put a factory image into it, can someone assist please?

I have just got rid of windows 10 and this is my first attempt at using zorin to do more than do emails and browse.

In windows I would copy and paste into a folder and I want to do the same sort of thing in linux.

This is beyone my ken so having tried different search parameters, this is the nearest I could get to what you may be after?:

https://www.quora.com/How-can-I-backup- ... tu?share=1