DFU Mode is more powerful than Recovery Mode, and is unsupported and undocumented for us, the end user. It lets an iOS device connect and talk to iTunes (or its Finder equivalent in macOS Catalina), without loading the bootloader, or iOS itself.

2018年10月31日 · Connect your iPhone to your computer using a Lightning cable and then open iTunes. This part will remain the same no matter which iPhone or iPad you are restoring. After connecting the device, you'll perform a series of button presses to enter DFU mode.

2024年9月12日 · DFU (Device Firmware Update) mode is a special state your iPhone can enter for troubleshooting serious software issues. It’s a more powerful tool than Recovery Mode, as it bypasses the iOS bootloader, allowing for a complete restore of your device’s firmware. Why Enter DFU Mode?

2025年3月18日 · Using DFU mode, you can upgrade or downgrade your iOS version, update from a beta version, and jailbreak your iPhone—or un-jailbreak your iPhone. This is a useful last-resort fix to rule out software problems, and it’s an effective way to restore a device that is stuck on Apple’s logo, buggy, or unresponsive.

2025年3月21日 · DFU mode is a deeper restore option than Recovery Mode, allowing you to update firmware and troubleshoot issues that other methods can’t resolve. Whether you are using the latest iPhone 16e , iPhone 16 or an older model, this post details the DFU mode on the iPhone and how to enter DFU mode on each iPhone model.

2022年12月30日 · DFU stands for the Device Firmware Update, it’s that state of your iDevice when it doesn’t load the Operating system on itself but still interacts with iTunes. Hence, DFU Mode allows all devices to be restored from any state. DFU Mode is very different from Recovery mode because DFU bypasses the iBoot bootloader on your iPhone, iPod Touch and iPad.

2022年3月3日 · The iPhone Device Firmware Update (DFU) Mode makes low-level changes to the iOS software running the device to help you solve phone problems.

2022年5月10日 · Putting your iPhone in DFU mode starts off just like a hard hard reset. Quickly press and release the volume up button, then quickly press and release the volume down button, and then press and hold the side button until the screen goes black.

2024年12月24日 · DFU Mode is a state that allows you to update or restore the firmware on your iPhone without loading the operating system or boot loader. This mode is different from Recovery Mode, which is commonly used to restore or update the iPhone’s firmware when it is not functioning properly.

2021年8月24日 · Device Firmware Update mode — or DFU mode for short — is a state that an iPhone or iPad can be put in to get your device back into working order. DFU mode is similar to the BIOS on Windows...