Apple says no update for iPod 4th Gen
Should I try a jail break if so is there
Do's and don'ts
What iOS version are you at? The iPod Touch 4th Gen/FaceTime as well as the iPod Touch 4th Gen 2011 and 2012 versions have a max update of iOS 6.1.6*.
Here is an Instructables on a Jailbreak: Jailbreak iPod Touch 4th Gen. I do however not recommend jailbreaking your iPod Touch. Proceed at your own risk.
Best of Luck!
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