a friend in my school says that if you don't update the 3DS in some days(i don't remember how many)the icons will be black and that is called "the screen of death".then the 3DS is "dead".is this rumor true?

There is a screen of death for the 3DS, but that's not how it's triggered.

'Course I don't know how to trigger it, nor do I want to.

Yeah, I don't have one, (I do plan to buy it) but I would like to know how it's triggered so I could avoid doing that at all costs.

I think it will be like the XBox's red death rings, so most probably there will be one. Will it be 3D?

I'm not sure what triggers it, but I updated my 3DS on launch day and haven't seen anything. I also got an e-mail from Nintendo telling me to update my 3DS urgently, so I'd get the launch system update and forget about the problem. If you say you don't have wireless internet, walk down a few streets in your area. I assure you that some stupid person will have unprotected internet. If not, there are plenty of hotspots around, check McDonalds or other places, there are three hotspots in my nearest shopping centre.