How to update Apple 5s ios7.1.2? IPhone5S Upgrade ios7.1.2 method diagram

Method One, installs on the handset

This is called oat installation, we are in the Apple phone "set"-> "General"-"Software Update" can be.

Method Two, installs on the computer

1, we first download the installation iOS7.1.2 System package in the computer, this can go to Apple official download;
2, download the corresponding firmware, open itunes, connect the equipment, back up important information;
3, select the device, Windows users hold down the SHIFT key (Mac users click option) Click on the update, choose the next good firmware, then OK

Friendly tips, to restore before the good data, oh, if it is in the mobile phone directly upgrade can not back up the data, but on the computer upgrade system is needed to back up the data oh.