Note that don’t release the buttons when you see the Apple logo.
After you restore your i Phone, you can sign in your Apple ID to restore most of your data automatically with i Cloud sync. Download Win Download Mac Step 1: Launch the i OS System Recovery Toolkit once you download and install it. Step 2: Before fixing your i Phone, you should follow the instruction to put your i Phone into DFU mode.
You can also restore backup from i Tunes backup file. For an i Phone 7/7 Plus: Press and hold the Power button and Vol down button at the same time for about 10 seconds, then continue holding the Vol down button until the software detected your i Phone in recovery mode and it will go to next window.
Quite a few i Phone users faced an issue known as “blue screen of death”.
What happens here is quite strange – you are using one of the apps, and all of a sudden, the screen on your i Phone turns into blue color and your phone reboots.
For i Phone 7/7 Plus Press and hold the Power button and Vol Down button simultaneously for about 10 seconds until your i Phone boot up. Note that do not release the buttons when you see the Apple logo. Once i Tunes detects your i Phone and show up the message, click on the “Update” option to fix your i OS system.