ios 8.1.3 wont download in my iphone 5

Hello lithium08,

Welcome to the Apple Support Communities! I understand that you are experiencing issues updating your iPhone wirelessly. Have you tried updating with a computer running iTunes instead?:

Update the iOS software on your iPhone, iPad, and iPod touch - Apple Support

http://support.apple.com/en-us/HT204204

Update your device using iTunes

If you can’t update wirelessly, or if you want to update with iTunes, follow these steps:

1. Install the latest version of iTunes on your computer.

2. Plug in your device to your computer.

3. In iTunes, select your device.

4. In the Summary pane, click Check for Update.

5. Click Download and Update.

If you don't have enough free space to update using iTunes, you'll need to delete content manually from your device.

Find out what to do if you get other error messages while updating your device.

Cheers,

Matt M.

Hi lithium08,

Thanks for the follow up. I’m glad to hear that you were able to get in contact with my colleagues here at Apple. Have a great day.

- Matt M.