Want this question answered?
Simple answer: Yes.Only update when the Jailbreak you use has a new version / then only update the Jailbreak, not the iPod/iPhone.
Upgrading an iPhone will update the firmware (the iOS) and will therefore remove the jailbreak. If you wish to stay jailbroken, it is highly recommended to not update until news of a new jailbreak arrives for the upgrade.
it gives you air play and makes it harder to jailbreak
It depends. If you UNLOCK it and put a new SIM in: No. If you just JAILBREAK it: Yes, yes you do.
No, jailbreaking and unlocking are two separate things.
Yes you can, but you will have to redo the jailbreak process. When you update your iPhone is it wiped clean and reinstalls the new OS from factory defaults. This is also why it is so important to backup your data prior and why iTunes does it automatically. Back up your iPhone before you update it. Then jailbreak it and then restore it with the previously backed up content.
Check this webside, its a video from youtube that shows you how to jailbreak the new iphone 3g S. Just fallow the instructions ;P http://www.youtube.com/watch?v=jtt-Y2tUYJs
If you update your iPhone/iPod, you will remove the jailbreak, then you would have to wait until the jailbreaking websites invent a jailbreak for the new ios, but why update if you jailbroke it?
the reason why it is not working because you probably have the new version of the firm which is 4.0.1.2 and for jailbreak me to work u need to be under 4.0 firm for your iPhone , or iPod s
Yes, as long as your with the same service provider. It also has free Wi-fi. Unlike the "Blackberry" you can just put in your old Sim card and it should work just as well.
Yes. Just sync your iPhone with your computer and download the 2.2 software. The new software should wipe out the jailbreak, so just re-install it.
The Iphone can take pictures, and so can the new ipod touch.