How to prevent an OTA update from being installed? How to prevent an OTA update from being installed?

I tried all tips to remove the OTA update notification for lollipop 5.1.1, none worked.

Still, that pops up and has a big install button near the home phisical button, that I am scared of misspressing being forced to install it even if I am in a hurry...

So, how to prevent it from working at all without rooting? Is it possible at all?

Model: samsung galaxy j7

Wont work screenshots (mixed as I can use only 2 links):
The dirty way to do that is to fillup your internal storage with several copies of any 100mb file. 

As soon you are low in free space (here is about 400 to 500) that popup with the big install button will show no more, but even if it does, it wont be able to proceed.
This seems to work better after a reboot. The message with install button seems gone now!

And If you need some space, just delete some of these temp files.