A short guide to iPhone mode in DFU, which allows you to restore a backup to your iPhone and update the iOS operating system.
With Apple releasing firmware updates , some iPhone owners are experiencing blocking and usage issues.
Manual DFU (Device Firmware Update) mode allows you to restore a backup to your iPhone and update the operating system manually.
Preliminaries:
Before carrying out a firmware update it is advisable to always make a backup of your iPhone .
Before starting DFU mode, you can try iPhone recovery mode by holding down the Home and Power keys until the system restarts.
How to start DFU mode:
- Connect iPhone to PC or Mac via the Lightning cable and wait for iTunes to open (if iTunes does not open automatically, start it manually);
- Turn off the iPhone;
- Press and hold the Power and Home keys simultaneously for 10 seconds;
- Release the Power key only (while continuing to hold the Home key). At this point iTunes will detect the iPhone in Recovery mode.
The iPhone device will enter DFU mode, showing a black screen on the display, while iTunes will report that it has detected iPhone in recovery mode.
By following the instructions of iTunes you can restore iPhone, choosing between Restore or Restore and Update , installing the latest version of iOS. iTunes will download the latest version of iOS and install it on the device.
At the end of this operation, you will be able to configure the device as a new iPhone or restore a previous backup.
How to stop DFU mode:
To exit DFU mode, just hold down the Home and Power keys until the Apple logo is displayed.
Hard Reset and DFU with iPhone 7 and iPhone 7 Plus:
The above procedure works with iPhones up to version 6s and 6s Plus.
Since iPhone 7 and iPhone 7 Plus do not have a physical home button, but an integrated one (which does not work without iOS starting correctly), Apple has replaced its functionality in Hard Reset and DFU with the button to lower the volume .
