It’s Apple cripples your 2.2 software update but hack it time! This time it’s the emoji, which only Japanese iphones got. So if you want it on your iphone or ipod, try the following:

You need to edit the file /User/Library/Preferences/com.apple.Preferences.plist on the device -> whether you use a jailbreak to achieve this or merely some iTunes backup editor is up to you.

Add the following boolean key as ‘true’: KeyboardEmojiEverywhere

[Update: Cydia has added this change as a package: See here for more]