IPad air2 upgrade ios8.2 operation process:
1. Download the official version firmware of iOS8.2 of the corresponding model >; & gtIOS8.2 firmware download;
2. Connect iPhone\iPad\iTouch to your computer and open iTunes;;
3. Hold down the Shift+ left mouse button on the keyboard and click the Update \ Restore function of iTunes;
4.iTunes will pop up a dialog window-please select the downloaded firmware-click Update-and wait for iTunes to run;
5. After successfully upgrading and restoring iOS8, you need to activate the device before it can be used normally (follow the steps prompted by the system).