If you want to jailbreak your iPod you can but if you dont wanna you dont have to, it's your choice but jailbreaking can cause fast battery drain and lag and with jailbreaking you can get free apps but if you dont jailbreak your ipod is smooth but you have to pay real money for apps(except free ones).
You can cancel your jailbreak by restoring your iPod or updating to the latest firmware
Not At All...... But updating your ipod will remove the jailbreak
Updating the iPod Touch software erases the jailbreak. You can update, but it will erase your jailbreak.
Yes, updating the software of an iPod undoes the Jailbreak.
Simple answer: Yes.Only update when the Jailbreak you use has a new version / then only update the Jailbreak, not the iPod/iPhone.
No you cant the only way is restoring or updating your iPod
How to jailbreak my iPod touch
Yes
Unless you want to brick it, don't. Wait until there's an update to your "Jailbreak" and then update. BE SURE TO UNJAILBRAKE YOUR IPOD BEFORE UPDATING!!
to jailbreak your iPod 4.1 go to greenpois0n.com
No. Your jailbreak will remain as it is. Syncing your iPod does not alter the jailbreak in any way.
to jailbreak your ipod 4.1 go to greenpois0n.com