Upgrade iPhone 5 to iOS 8.1

WARNING: Before perform the update, always perform phone backup! The author will NOT be held responsibility under any circumstances.

PRE-CHECK LIST

1. Make sure the phone battery is fully charged or connect to direct power source (recommended).

2. 'Wi-Fi' is connected to download the iOS 8 package.

3. Full iPhone 5 backup using iTunes. Follow this guide to install iTunes; http://emanduel.blogspot.com/2012/07/install-itunes-on-windows-xp-pro-sp3.html.

4. Once backup completed, disconnect the phone.

UPDATE!

1. To view installed version:

   Settings > General > About. Look for Version: 6.1.4 (10B350)

2. Settings > General > Software Update

3. Click Install Now

4. Terms and Conditions > Agree > Agree

5. iPhone will restart. Update in progress

6. slide to upgrade

7. Enter Passcode

8. slide to set up

9. Enter Passcode

10. SIM Locked > Unlock

11. Update Completed > Continue

12. Location Services > Disable Location Services > OK

13. Enter Apple ID password > Next

14. Find My iPhone > Use Find My iPhone

15. Welcome to iPhone > Get Started

URL: http://www.macworld.co.uk/how-to/iosapps/how-update-iphone-ipad-ios-8-without-deleting-3451992/

Backup iPhone 5 Using iTunes

1. Follow this guide to install iTunes; http://emanduel.blogspot.com/2012/07/install-itunes-on-windows-xp-pro-sp3.html.

2. Connect iPhone 5 to laptop

3. File > Devices > Back up

4. Click Back Up Apps on 'There are apps on "iPhone" which are not in your iTunes library. Would you like to back up these apps from your iPhone?'

5. Click Authorize on 'This computer is no longer authorized for apps that are installed on the iPhone “iPhone”. Would you like to authorize this computer for items purchased from the iTunes Store?'

6. Enter Apple ID and Password on 'Sign In to the iTunes Store'. Click Sign In

7. Click OK on 'Computer Authorisation was Successful'

8. iTunes > Preferences... > Devices. Under 'Device backups:' look for device name and date and time backup created.

9. Once backup completed, disconnect the phone.

URL: https://support.apple.com/en-us/ht1766