What do I have to do to update if my iPhone is jailbroken?

I want to update to IOS 7 but my phone is jailbroken. Do I have to back it up, restore it, THEN update it? Or can I just back it up and update it. I've tried looking at forums online but all of them say I have to do something different.

How to go offline in facebook app from my iPhone?

Even why I set the gear offline on facebook app, I'm online all the time while I'm logged in facebook. Any help of you would be good.

Added (1). Can you be clearer Bijoy, I mean how can I stay inside of facebook and appear offline, of course i set off my account to the gear on the chat. But to apps, I don't know…

Can I erase my iPhone 5 without updating to IOS 7?

I'm on IOS 6. If I erase my iPhone using iTunes, it'll automatically install IOS 7. If you go to settings > general > reset > erase all content and settings and click on it, will it stay on IOS 6? Or will it get stuck? (I've heard people saying it got stuck).

How to change coins to Big Bucks?

In Big Win NHL (for iPhone) how do I change my coins to Big Bucks.
Also is there a way that when I buy a card pack it's guaranteed that I will get a new goaltender? My last contract with him ended and i have no renewals so he is now a free agent and doesn't play as well but i don't have enough Big Bucks to renegoitate

Why doesn't my iPhone have service? - 1

I tried to put my sims card into another iphone since mine broke but it says I don't have any service. Will I have to take it to the AT&T store to get it fixed?

How to translate Japanese to English?

I'm reading some fan comic of a manga i like but they are in Japanese and i try a iphone app that translate but every time i try it, it either say rumor word or doesn't work, i try it on the computer not paper. Can someone tell me how without learning japanese.

If I buy an unlocked Iphone 5s from the UK will it work in Kuwait?

The Iphone 5s is ridiculously expensive in Kuwait, so I thought about buying it online, through the official apple store, but my only concern is that it will not work. Yes, I know buying the unlocked means it will work anywhere, but how will I be 100% sure it will work in my country?
if anyone has any information or experience please share.

Are ipod 5 and iPhone 5 the same size?

I wanna get a lifeproof case for my iPod but I wanna get it cheap on like Amazon or something but I can only find iPhone 5 cases. Would that work for it?

Problem with wireless printer (officejet 6100)?

I have a wireless hp printer hooked up to a toshiba laptop. I recently ran out of ink, so I replaced the black, but left the color empty. I had previously set it to black ink only printing, but now it says it is unable to print. I have tried from the laptop and my iphone, but every time it comes up saying I'm out of ink. But I had used it before with only the black ink. What should I do?
It's a HP office jet 6100