iOS8 how to Downgrade ios7.1.1 or ios7.1.2? iOS8 Downgrade Tutorial

Preparatory work

1. A computer with Internet access (and the latest version of itunes software installed on your computer)
2. Apple Mobile data Line one
3. An Apple phone

Downgrade step

1, we now connect the Apple phone with the computer, then in the Apple phone simultaneously press "home" + "power button" 8 seconds Force shutdown-shutdown after the long press "home" key 8 seconds-connect the computer through the USB cable, or the device linked to the computer, first press and hold the power button for 3 seconds, And then continue to hold down the switch and home keys at the same time, continue to the first 10 seconds, release the key immediately and continue holding down the home key until you see the USB device in the DFU state on your computer and go to DFU mode, and itunes automatically or manually starts.

2, now our computer's itunes device will detect a need to update the device.

3, now we also press the SHIFT key on the computer keyboard +itunes "Restore" and then select we want to revert to the lower version of the system, such as we choose the ios7.1.2 version.

4. After choosing a good system, itunes will automatically give us a new brush machine, restore to a brand-new system;

5. After the restoration, click "Set as New device" on itunes

Friendly tips, in fact, this is the phone we have a reinstall process of the system, the high version of the system removed and then install a lower version of the system is a bit like from the windows8.1 installed back to the Windows7 system as well.