Yes. It is supported
if you mean ipod touch, and its a 4th gen ipod touch or 32gb or 64gb ipod touch 3g, then download the latest itunes, plug it in, and hit update in itunes
No, only iPod Touch 5 can use iOs 7
iOS 5 is only available to iPod Touch 3rd Generation and Above. If you are eligible, plug in your iPod into iTunes and it should prompt you to upgrade to iOS 5.
no but you can get it on a iPod 5
yes you can downgrade your ipod using programs you download from the internet (they all have there own instructions)
Any iPhone, iPod touch, or iPad that is using iOS 5.
You can download an app like Textfree or, in iOS 5, you can message via iMessage app that comes with the update
Any iPhone, iPod touch, or iPad that is using iOS 5.
There is no iPod Touch 5th Generation. The iPod Touch 4th Generation runs iOS 5.
iOS 5 is for iPod Touch 3G and 4G. Anything lower will not be able to run this. Go into iTunes, Plug in the device, Click on your iPod in the right column, Click Update. It will take a while to download and install.
No