I faked my iPhone firmware and now it's doing funky stuff?

This is a pretty long story:
I have a jailbreak on my iPhone 4. I have iFile so i decided to "spoof" my iOS version to download apps built for iOS 8. So i tried it and it didn't work. I had a few themes in WinterBoard so i decited to change my theme. I chose one and chose Respring. The iPhone went into respring mode, and started doing something, like updating stuff or something. I shut it down and it turned on again. Is anything gonna happen or can i restore it via iTunes? Please help, i don't wanna lose my iPhone.

Added (1). The iPhone turned on by itself, i force shutdowned it (it didn't start anything)

Added (2). I already almost lost it, its bios fried

Is there anyway to scroll to the beginning of a text message history on an IPhone?

I know that you can slowly go through and load previous texts but that takes an extreamly long time. I was wondering if there's a way to just load the entire history of texts between me and another person.

My girlfriend likes to go back through our previous texts and read conversations that we have had over our 10 month relationship. Unfortunately she accidentally deleted the entire text history yesterday and was sad that she wouldn t be able to go back and read everything. I was thinking of going back through and screenshotting all of our texts from my phone and printing them to put in a binder for either her Christmas gift or our one year anniversary gift. So I was wondering if there was a way to go back to the beginning quickly instead of slowly scrolling and waiting for previous texts to load?

Sony Xperia z3 compact VS Apple Iphone6?

Which one out of these 2 do you feel is a better choice?

Added (1). hmm… That's not incorrect too. Iphones have got a reputation of their own… I love them personally.
But the xperia z3 compact claims this tagline- "this phone is the nightmare to iphone6…