Why isn't ios 7.0.4 installing properly?

This has been happening for a while now since the update of ios 7 came out. I have an iphone. And it won't install. Whenever i click install it gives me an error it says verifying update but then a message pops up saying an error occurred while installing ios 7. I have good connection and over 50% battery. But i'm wondering on why ios7 is not installing on my iphone5 thanks in advance!

Did you jailbreak your phone before? Jailbreaking could cause this problem. To fix it, save all the personal data and do a factory reset and connect your phone to a computer and do a update.

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