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 but you can get it on a iPod 5
You cannot. The iOS 5 update is only for Iphone 4, iPod touch 4, iPad 1, iPad 2
No, the update is only for iPhone 4, iPod touch 4, iPad 1, iPad 2. The highest version iOS Firmware for the iPod Touch 2G is 4.2.1.
Ios 7 is the latest ios. Ios 7 is available on the fifth generation iPods, recent iPads and iPhones 4 and 5.
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.
If its iOS 4 to iOS 4.3.5 then go to JailbreakMe.com If it has iOS 5 to iOS 5.0.1 use Redsn0w (provided down below in related links)
Sadly, no. The latest version of iOS for the 4th Generation iPod Touch is iOS 6.1.5.
No, only iPod Touch 5 can use iOs 7
No
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.
Possibly