Yes
yes. but i recomened using itunes.
You need a computer to initially sync your iPod, but after that you do not need internet, however if you want apps you will need internet.
Yes and no. If you sync it your iPod will remain jailbroken. If you update it to say 4.1 it will un-jailbreak your iPod. Then you will need to re-jailbreak it.
the ipod need to be On and connected to internet
no you dont need internet for your ipod touch.....but...it is an option you just have to get it on the network
The 8gb iPod is not capable of downloading the IOS 4.3 update. If you want to run IOS 4.3 on your iPod, you will need to update to at least a 32gb iPod.
No
No, but you need internet to buy music.
It can take between 15 minutes to a couple hours to update your iPod 4gen 6.1.5. The length of time will depend on your Internet speed.
you must restore itouch then update. Sorry!
Yes. You will need a computer with iTunes and it needs wifi. Have fun with your update!
You need an internet connection to get apps for your iPod Touch, whether it is downloading them directly to the iPod Touch or it is using iTunes through a computer.