Without hacking (or possibly bug exploits), it's impossible to destroy an End portal. End portal blocks, like bedrock, cannot be removed by any means the player is supposed to have at their disposal. (There are some weird tricks to get rid of bedrock, which may also work for End portals, or you can use a map editor to just remove it).
unless your playing minecraft portal mod and portal
There are 2 portals you can craft in Minecraft. The Nether Portal and The End Portal.
In order to to the nether you need a portal.
The actual Portal's ID is 90. The frame of the portal, Obsidian's ID is 49.
Make a 5x4 Portal going upwards of obsidian.
Make a nether portal.
You can't
its a mod
No, sadly you can not make an Aether portal on the Xbox Edition of Minecraft because the Aether is part of a mod. As of now, the Xbox Edition of Minecraft does not support mods.
A Nether portal is an obsidian structure that can transport players to or from the Nether dimension. USB doesn't come into it anywhere. The 'Minecraft USB nether portal' is just a YouTube fake.
The nether portal and the newest one, the end portal.
No