DFU Restore

To fix the issues with your iPhone, we’re going to do a “DFU Restore”. DFU stands for Device Firmware Update and because it reloads the software and the firmware, it’s an even deeper restore mode than the recovery mode Apple describes on their website. 
Caution: Be warned though that if you haven't upgraded your OS to the latest compatible version this will upgrade your device and it is not reversible once completed.
  1. Back up your phone to iCloud or iTunes.
    1. Do not skip this step! 
  2. Plug your iPhone into your computer and open up iTunes. You’ll see your iPhone show up in the upper right-hand corner.
  3. Press and hold the Power Button (on top-right of iPhone) and Home Button (front center, below the display) together for 8 seconds. You’ll see your iPhone’s screen go black – that’s normal. 
    1. (Yes, this is like doing a hard reset, which generally isn’t a good idea, but it doesn’t matter here because we’re reloading all the software on your iPhone anyway!)
  4. After 10 seconds, release the Power Button but continue to hold the Home Button. Keep holding until iTunes says it has detected a phone in recovery mode. Then you can let go of the home button and set your iPhone aside.
  5. If you’ve successfully entered DFU mode, your iPhone will show up in iTunes but the display of your iPhone will be black. This is perfect! 
    1. If you see anything at all on your display, you haven’t entered DFU mode. If you need to reset your phone, hold both the Power Button and Home Button together for several seconds until the Apple logo appears.
      Please Note: Once you start a restore, don’t pull the phone from your computer – let it finish.
  6. Click ‘Continue’ on the iTunes dialog box that says ‘iTunes has detected an iPhone in recovery mode…’
  7. Click Restore, download the software if necessary, and allow your iPhone to restore. The process can take anywhere from 8-15 minutes, depending on the model of iPhone you have.
    1. Older models tend to take longer to restore, but the process is the same.
  8. After the restore finishes and your iPhone reboots, iTunes will display a screen that says ‘Welcome to your new iPhone.’ Unplug your phone from the computer and walk through the restore process using your iPhone.

Now that your iPhone is good as new and all your apps are downloading, give your phone a few days to recalibrate. 

It might take some time for it to recalibrate and we recommend fully charging your phone and letting it fully discharge a couple times before declaring the problem officially fixed or not. 

If the issue comes back, you’ve eliminated the possibility of a software or firmware issue, and it might be time to have us send out a replacement part.

You can also find a great article on how to do a DFU restore as well as a overivew video here: Here are the instructions: https://www.payetteforward.com/how-to-put-iphone-dfu-mode/

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