Changing the version of the AI

Well I just started my server today and went fishing for plugins at pocketmine.net, and when I try to download and place the plugins and start my server up... It says the version of the AI isn't compatible... When I change the AI in the plugin phar file... It Doesn't Work... I am using the Diebo's 64x bit installer 1.6 version PHP7 latest Pocketmine-mp.phar file... I don't get it... I need HELP!!!!

You need to update the plugin API in order to use it with the latest PocketMine. Since the automatic update tool is broken, you need to do it manually. This is how you do it:
http://forums.pocketmine.net/threads/help-signportal.17870/#post-168214

How Do I know which files to add a Tag onto their code and how do I convert a zip folder back into a phar file so I can run it...

Use dev tools to convert to phar

I cant because to use dev tools to convert into phar... I have to change the API of dev tools to actually install it

Maybe take it from githuv and change the api from devtools to 2.0.0

Extract plugin command in devtools

https://github.com/PocketMine/DevTools/releases/tag/v1.11.0

Oh ok, So all I have to do is download all my plugins from GitHub? Right?

If they're updated, yes. If not, you'll have to manually update them.