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.
You can update it to iOS 5 the same way you update it to any other iOS version. The 4th generation (and indeed the 3rd generation) iPod Touch can be updated to iOS 5.
No, only iPod Touch 5 can use iOs 7
no but you can get it on a iPod 5
No it did not. It had IOS 6. But you can get IOS 7 on it. Also when IOS 7 came out they put it on the iPod 5 in stores.
Any iPhone, iPod touch, or iPad that is using iOS 5.
You cannot. If you buy a new iPod or iPad or iPhone, it comes in iOS 4.3.3 and you have a choice to update to IOS 5 or not.
You cannot. The iOS 5 update is only for Iphone 4, iPod touch 4, iPad 1, iPad 2
Any iPhone, iPod touch, or iPad that is using iOS 5.
No
iOS is not compatible with any iPod that is not an iPod touch. This means there is no way to install it on an iPod shuffle, classic, or nano.
Ios 7 is the latest ios. Ios 7 is available on the fifth generation iPods, recent iPads and iPhones 4 and 5.