Yes. Simply restore iTunes without clicking any options or anything and it should be back to normal.
Yes, restoring your iPod will take off the jailbreak, and you will have to jailbreak it again.
yes, by restoring it.
You can turn off the iPod Touch if you jailbreak it.
A tethered jailbreak means that YOU CAN NOT TURN OFF YOUR IPHONE or IPOD TOUCH and YOU CAN NOT LET YOUR IPHONE or IPOD RUN OUT OF BATTERY if you did any off these things on your tethered jailbreak you will have to BOOT your device which mean you will have to re jailbreak your packages
Just don't
If they are apps downloaded from cydia, then no, because cydia apps don't sync with iTunes.
Hey search 'spirit jb' (jb = jailbreak) easiest (and working) 3.0 ipod touch jailbreak and you can turn ur ipod off and not have to restore everytime you turn it back on.
How to jailbreak my iPod touch
You have to jailbreak your iPod and get a certain package off cydia
you shouldn't be able to get a virus on your iPod, unless you jailbreak it then that's your problem
to jailbreak your iPod 4.1 go to greenpois0n.com
You can't, Jailbreaking is cool. Why do you want to take it off. Well just restore it! If you take cydia and stufff off you'll take off your jailbreak and ya. ENJOY!