All about DFU mode
DFU or (Device Firmware Upgrade) mode allows all devices to be
restored from any state. It is essentially a mode where the
BootROM can accept iBSS. DFU is part of the SecureROM which is
burned into the hardware, so it cannot be removed. On A7+
devices, it generates an ApNonce and recognizes APTickets as
well, so even in DFU, it can accept an APTicket.
Entering DFU Mode
NOTE: If you are using a USB-C cable to enter DFU mode, it might
not work. If this happens, you need to use the normal USB cable.(lightning cable)
You can use a normal USB cable and a USB to USB-C adaptor.
Apple TV
Plug the device into your computer using a Micro-USB cable.
Force the device to reboot by holding down the "Menu" and "Down"
buttons simultaneously for 6-7 seconds.
Press "Menu" and "Play" simultaneously right after reboot, until
a message pops up in iTunes, saying that it has detected an Apple
TV in Recovery Mode.
A9 and older devices (iPad other than the ones listed below,
iPhone 6s and below, iPhone SE and iPod touch 6 and below)
Connect the device to a computer using a USB cable.
Hold down both the Home button and Lock button.
After 8 seconds, release the Lock button while continuing to hold
down the Home button.
If the Apple logo appears, the Lock button was held down for too
long.
Nothing will be displayed on the screen when the device is in DFU
mode. If open, iTunes will alert you that a device was detected
in recovery mode.
If your device shows a screen telling you to connect the device
to iTunes, retry these steps.
A10 devices (iPhone 7 and iPhone 7 Plus, iPad 2018, iPod touch 7)
Connect the device to a computer using a USB cable.
Hold down both the Side button and Volume Down button.
After 8 seconds, release the Side button while continuing to hold
down the Volume Down button.
If the Apple logo appears, the Side button was held down for too
long.
Nothing will be displayed on the screen when the device is in DFU
mode. If open, iTunes will alert you that a device was detected
in recovery mode.
If your device shows a screen telling you to connect the device
to iTunes, retry these steps.
A11 and newer devices (iPhone 8 and above, iPad Pro 2018, iPad
Air 2019, iPad Mini 2019)
Connect the device to a computer using a USB cable.
Quick-press the Volume Up button
Quick-press the Volume Down button
Hold down the Side button until the screen goes black, then hold
down both the Side button and Volume Down button.
After 5 seconds, release the Side button while continuing to hold
down the Volume Down button.
If the Apple logo appears, the Side button was held down for too
long.
Nothing will be displayed on the screen when the device is in DFU
mode. If open, iTunes will alert you that a device was detected
in recovery mode.
If your device shows a screen telling you to connect the device
to iTunes, retry these steps.
Exiting DFU Mode
To exit DFU Mode, simply force restart your device.
For Apple TV, hold down the "Menu" and "Down" buttons on your
remote until the Apple TV reboots.
For iPad, iPhone 6s and below, iPhone SE and iPod touch, hold the
Home button and the Lock button until the device reboots.
For iPhone 7 and iPhone 7 Plus, hold down the Side button and
Volume Down button until the device reboots.
For iPhone 8, iPhone 8 Plus, and iPhone X, quick-press the Volume
Up button, then quick-press the Volume Down button, then hold
down the Side button until the device reboots.
its work
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