How to remove my Evasion Jailbreak?

I jailbroke my iPhone 4s (iOS 6.1) using Evasi0n when it came out. Since iOS 7 is coming out soon, I was wondering, would it work if I simply update to the new iOS? Or do I have to restore my phone first? I read somewhere that simply clicking "update" will remove the jailbreak as well as update the iOS, but a lot of people are saying that this doesn't work in case of the Evasi0n based jailbreak.
Can someone please clear this for me? I have a lot of data on my phone and a lot of in-app data as well and I don't want to lose them.

Do I have the right to worry and what should I do?

Okay, so me and my girlfriend talked a while back, but broke it off because her friend had a crush on me and it was hurting her friend. So we started talking seriously again on the 5th. Now on the 7th, she promised me that she still liked me more than before, so she comes to my house on Tuesday and she logs on my iPhone with her facebook on messenger. Now do note; She told me she was very sociable, but she also tells me that guys are always wanting to get with her.So, this is where I become bothered by this as the start.So. She leaves and.being a new relationship and all. I need to develop trust. I go through her messages and Monday she sent a picture of her in her panties to a guy. She was also calling 2 guys love, but I payed no mind because we weren't dating yet. So I told her about it, we talked about it, and she said yes, because we weren't dating yet, now they mean nothing to her. So the whole day, she talked to me, then I fell asleep, and I wake up, to a bunch of notifications on my phone, she was telling about 4 or 5 guys to text her, now why do it after I fall asleep? Why do it if they mean nothing to you? *Note; These aren't the same guys from Monday* Do I have the right to worry, be mad, and jealous? Because it hurts me. I do get jealous. What do I do?

Iphone 4s upgrade and jailbreak?

My iphone 4s is network locked to Globe. And i had it unlocked so i can use other networks. I was wondering if i would upgrade my ios to the newer one or if i would jailbreak it, would it affect the network locked etc of the phone? Will it go back on being locked?

Why Apple hates jail breaking yet they get ideas from Cydia?

When you submite an app to apple you must pay them $100 every year to develop it. For years apple has been ripping off developers in App Store and in Cydia. Isn't it time for apple to give up the race and go android? Apple copies and blocks apps that offers a great benefit than they allow. And the monopoly of screening your code before they give you a green light on the app store is intellectually illegal. At least compesate the developers but apple just enjoys the billions after rip.look at auxo, Wi-Fi sync, notification centre and a bunch of individuals going under. The question is, is it worthy to develop for apple products? And will your next phone be an iPhone and why?