Yes, I have done it and it works great with no problems.
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.
Upgrade to iOS 4 in itunes.
You have to upgrade to iOS 4 Firmware for free
i saw a guy upgrade his 2g all the way up ios 4.3 so i think you can upgrade yours up to the latest
you have to upgrade the iOS to 2.2 or above
The 2nd Generation iPod Does not have the processing power to run iOS 7. Neither does the 3rd or 4th generation. Only the 5th generation iPod Touch can be legally updated to iOS 7.
Only certain model iPod touches are capable of supporting iOS 4.3. The minimum iPod touch capable of supporting iOS 4.3 is an iPod touch 3rd generation, from 2009. The highest iOS that this model iPod touch supports is iOS 5.1.1.
iOS 4.2.1 is the highest iOS firmware you can reach on the iPod Touch 2nd Generation.
No, only iPod Touch 5 can use iOs 7
Yes, you can. For iPod touch 2G, 3G and 4G, you need to upgrade to iOS 4.1. Then go to greenpois0n.com (spelt with a zero), download greenpois0n, and follow the instructions. If you have an iPod touch 1G, go to jailbreakme.com ON YOUR IPOD!!! and follow the instructions.
Upgrade to iOS 4. It's free. It won't work if you have an old iPod Touch (before September 2009) or any 8GB iPod Touch. You'll need to jailbreak to get wallpaper.
You can't downgrade an IOS on your iPod Touch.