My iPhone 5 won't update to ios8?

I'm trying to update to ios8 but everytime I attempt to do so, it keeps saying Software Update Failed: An error occurred while downloading iOS 8.0

What do I do?

Do you have enough free space?
Did you try will connected to a computer and iTunes?

  • Why won't my iPhone 5s let me update to iOS8? My iPhone 5s won't let me update to iOS 8. I have 6GB of space for the update and enough battery percentage. I have the notification for the update and every time I try to update it all it says is "checking for update" for a long time and nothing comes up. Also my App Store and ITunes store every time I search something nothing pops up.what's wrong with my phone?!
  • My iphone software update isn't showing ios8? My iphone software update hasn't yet asked me and also does not show iOS 8 in the settings? Soloutions?
  • My iphone 4s won't upgrade to ios8 Before you go telling me how to check for updates, via wireless and iTunes, I've already tried it. About a hundred times. Both my phone and my computer say that I have the most curent/latest version, which is the ios7.1.2. I don't know what the problem is. There are no error messages, I have plenty of space on my phone, I really need help.
  • IPhone won't turn on because of ios8? I'm trying to get the ios8 but i forgot to backup my phone before i did it plus i didn't know and now that i'm trying to back it up on iTunes or on icloud it won't let me and i can't turn on my phone, what do i do? It keeps telling me i need to restore it but i don't want to do that, i don't want to lose any of my pictures! what would you do in you were in my situation