How to update an iPhone without entering passcode?

My jailbroken iphone messed up and the screen is black, it turns on but its just black. Its still black even when i put it in safe mode. The only way I know to fix this is to update or restore it. IOS 8.3 is avalible and i can update but it requires my passcode to do so.

Why is my iPhone dying so quickly?

Lately my iPhone 5c has been dying really fast and tonight it was even faster. It lasts me until 5-6 o'clock but in the past would last until 8-9. What happened tonight was I checked my phone at 8 and it was at 51%. I checked it half an hour later and it was at 22%. I didn't touch it for the rest of the night and had it on do not disturb mode (which it is on frequently). I checked it at 11:20-ish and it said 17% (which I was okay with, but still concerned about) but then I opened snapchat and the 10% warning came up and I went to the home screen and it said 1% and died right there. It wouldn't turn on until I plugged it into a charger and when it turned on (not even a minute later) it said 14%. Why is my phone dying so fast?!

IPhone 5 iTunes & screen

I have an iphone 5 and long story short the iphone screen literally came off on the body, the phone still turns on and comes up on itunes but i need to respond to itunes on the actual phone. I need to get pictures off of it but i have not trusted the computer, but can't allow access anything i can do?

I want to take pictures under water?

But I'm not sure if to buy a life proof cause firm my iPhone 5s or if to buy the water proof case for my canon powershot s110? What will give me the best under water quality?

What are the perks of getting T mobile besides the pricing?

According to my aunt the pricing for a 4 family plan is reasonable(unlimited texting is involved and I'm unsure about the data thing). Going to be switching to T mobile soon. I have the iPhone 5s from AT&T currently so I will have the iPhone 5s when I switch to T mobile.

THERE's A SMALL BIRD ON MY CAMERA?

So there's this small bird that has been popping up on my outward camera of my iPhone. First I noticed it on my snapchat so I thought it was a snapchat thing but it's on my regular outward camera to. No matter how many times I wipe the screen or restart my phone it doesn't go away. When I switch it to selfie mode (sorry i don't know what it's called) it's not there. None of my friends have this one there phones and my friends have seen it on mine so trust me I'm not hallucinating. I don't know what it is and I'm afraid it could be someone hacking me. Does anyone know what it could be or what to do about it? And has this happened to you? Here's a picture of the bird. I circled it THERES A SMALL BIRD ON MY CAMERA

How to access restored iPhone 5 with new apple ID?

About 6 months ago, I went to fix an old iPhone 5 to a computer repair shop, it took a couple of weeks for me to get my phone back because they never called and I always forgot to call them to see what was going on. It sounds so irresponsible but I didn't actually need the phone, I just wanted to get it fixed so I could give it to a family member that needed it but we had no hurry so I always forgot. ANYWAYS, after some weeks, I went back to the shop and found out they had moved to a new location and with the hectic move they forgot to call. They gave me "my phone" without a charge and told me they couldn't fix it. I went home a little disappointed. I've had this phone for months just laying around the house and never threw it away. Today, out of curiosity I turned it on and the "connect to itunes" message popped up. I got so excited. It gave me the option to update or restore so I chose to update it. Then it asked me for my passcode, I enter it and it tells me it incorrect. I reconnected to itunes and a message pops up telling me if I want this computer to access the information on "KTs iPhone?" but my name is not KT. I instantly realize the guy gave me the wrong phone. I restore it and use my current phones sim card bc it had none but it won't let me sign in with my apple ID. It wants KTs apple ID. Is there anyway I can use my apple ID instead of KTs?