How to put an Apple iPhone 3G/S in DFU mode?

DFU stands for Device Firmware Update, and means the same as recovery mode. It means that the Apple iPhone 3G/S, connected to the computer with iTunes, will boot but will not load the operating system iOS, allowing to backup and restore the device after a big crash, or to update the firmware if necessary.


What is DFU mode, what is recovery mode

DFU stands for Device Firmware Update, and means the same as recovery mode. It means that the Apple iPhone 3G/S, connected to the computer with iTunes, will boot but will not load the operating system iOS, allowing to  backup and restore ‌  the device after a big crash, or to update the firmware if necessary.

A computer with iTunes installed is necessary to put the Apple iPhone 3G/S in recovery mode, and the iPhone must be connected with a USB cable.

How to put Apple iPhone 3G/S in recovery mode

After the Apple iPhone 3G/S has been plugged to the computer using an Apple lightning cable, start iTunes on the computer.

The button combination power and volume down must be pressed simultaneously and hold, until the Apple iPhone 3G/S turns off.

Keep pressing the buttons, power button and volume down, and keep doing it when the Apple logo is shown on the Apple iPhone 3G/S screen.

Only when the Connect to iTunes information is displayed on Apple iPhone 3G/S screen, the buttons can be released.

How to put Apple iPhone 3G/S in DFU mode

The message There is a problem with the iPhone that requires it to be updated or restored. should appear on iTunes, as the Apple iPhone 3G/S suffered a huge software error, or the  backup and restore ‌  might have failed.

In that mode, there are two possibilities, to  backup and restore ‌  the Apple iPhone 3G/S or the update the iOS operating system, depending on the exact problem with the phone.

Once the firmware has either been restored or updated, the Apple iPhone 3G/S will reboot by itself, and exit that recovery mode.

Exit recovery mode Apple iPhone 3G/S

To exit the recovery mode, for example when experiencing an Apple iPhone 3G/S stuck in recovery mode, there is a way to force the iPhone to exit the DFU mode.

To achieve it, press and hold the power and the volume down button at the same time. After a while, the Apple logo should appear on the Apple iPhone 3G/S screen, and the Connect to iTunes message should disappear.

After that, the Apple iPhone 3G/S will reboot, as the errors should have been solved by iTunes.

Unlocked iPhone firmware version 2.x using GrameenPhone network in Bangladesh.

Problem description

The device has not been recognized by iTunes, cannot get out of recovery mode on iTunes, Apple iPhone 3G/S stuck on logo, Apple logo does not disappear on Apple iPhone 3G/S, no progress bar on Apple iPhone 3G/S boot, connect to iTunes screen is showing on Apple iPhone 3G/S, forgot Apple iPhone 3G/S passcode, Apple iPhone 3G/S stuck in recovery mode, how to put Apple iPhone 3G/S in DFU mode, Apple iPhone 3G/S stuck in recovery mode, how to get Apple iPhone 3G/S out of recovery mode.






Comments (0)

Leave a comment