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How to downgrade iPhone (methods and How to manage port congestion datasteps to downgrade the iPhone system) In some cases, there is a problem with the system upgrade of the iPhone or the upgrade affects the performance of the device, users can It may need to be downgraded back to the earlier system version. In this case, iPhone users should know how to downgrade the operation to avoid data loss or other problems caused by misoperation. At the same time, it should be reminded that downgrading also has certain risks, so it is recommended that users back up before downgrading to avoid data loss. The following are the methods and steps to downgrade the iPhone system: I. Backup data. Before downgrading, you need to back up the data first.iPhone users can back up through iTunes or iCloud so that they can restore the backup data when needed. 1. Backup users on the computer need to connect the device to the computer first, open the iTunes program, select "Device" in the left menu, and then select "Back Up Now" in the panel that appears to back up the data in the device to the computer. The length of backup time will vary depending on the size of the data volume. Two. Backup iOS devices on iCloud. Users can back up through iCloud, which is safe and easy to use. Open the "Settings" app, click "iCloud" in the menu, then enter the panel under "Backup", open "iCloud Backup", and click "Backup" for iCloud backup.Please note that before backing up, please make sure that the device is connected to the power supply and WiFi. II. Before downloading the iOS firmware required for downgrading, you must obtain the target iOS version of the firmware for use in the downgrade operation. Users need to find the required iOS version on Apple's official website and download the iOS firmware that matches the device model. 1. Before finding the desired iOS version and downloading the firmware, users need to know whether the currently available iOS version is suitable for the device model. You can find the required iOS firmware in the following link. Https://ipsw.me2. Download the iOS firmware. After finding the required iOS version, users can select the desired iOS version and click the download button to download it. This process requires a certain network speed and time.III. Downgrade the system of iPhone 1. Connect the iPhone to the computer. Before downgrading the operation, the user must connect the device to the computer. After connecting, open the iTunes program. Two. Use iTunes to enter DFU mode. Before entering DFU mode, make sure that the current iTunes program version is the latest. At the same time, it should be noted that after entering the DFU mode, the data of the device will be cleared, so the backup operation must be carried out first. The specific way to enter the DFU mode is as follows: - Turn off the device and connect it to the computer. - Start pressing the power button for 2 seconds and press the volume down button at the same time. - Release the power button, but keep the volume down button pressing for 10 seconds. - Release the volume down button and enter DFU mode. 3. In iTuneAfter selecting iPhone in s and entering DFU mode, iTunes will automatically prompt users to reinstall the software. iTunes will display the phone, click "Restore iPhone" and hold down "Shift" to select the downloaded firmware file. Four. Install iOS firmware. After selecting the downloaded firmware file, press the "OK" button to start installing iOS firmware. This process requires a few minutes or even hours, and the specific operation time will vary depending on the mobile phone model and firmware size. 5. Device recovery When the firmware installation is completed, the device will restart and the welcome screen of "Hello" will be displayed on the display. At this time, users can choose to restore from the backup data or start over. Conclusion downgradeAlthough the operation is more complicated than the upgrade operation, in some special cases, the operation is still safe and feasible, and can often fix some problems in the use of previous versions. If you need to downgrade the operation, please make sure that the required data backup has been carried out step by step before completing the operation to ensure the security and reliability of the data.
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