Sometimes, after updating the system, it becomes necessary to return it to an old version. The reasons for this need may be unstable operation of the device, problems in the operation of some mobile applications, and much more. To roll back the firmware version, you can contact the service center or reinstall the system yourself.
The procedure for rolling back ios 10 to ios 9 or 8 takes no more than 30 minutes. There are two ways to install an earlier version of the software. Both of them are simple and do not require any special knowledge and skills. The process of reinstalling the operating system can be monitored through a special program. When rolling back ios to version 9 or 8, you cannot interrupt the installation process by the operating system. In no case should you minimize the program window, disconnect the device from the computer, use other programs and the computer during system installation, and also turn on the device during system installation. After the previous version of the system is installed, a welcome message will appear on the device screen, after which you need to activate the device.
Preparing to reinstall
Before installing the old version of ios 9 or 8, you need to copy all data from the device to a computer or flash drive (this can be done using the iTunes program). A backup must be done in order to avoid data loss, since when reinstalling ios, all information from the gadget will disappear. You also need to make sure that iCloud sync is enabled on the device (this can be done in the settings), make sure that the media files are automatically copied.
To make a backup, you need to connect the gadget via a USB cable to your computer, open the iTunes program and log in to it. In the top line of the program window, select the type of your device, then make a backup.
Before rolling back the operating system, you must disable the Find iPhone function, Touch ID / Password (if the operating system is reinstalled on the phone). If you do not do this, you will not be able to reinstall the system. To disable passwords, you need to go to settings, select Touch ID and password, and then select the "disable passwords" section.
A dialog box will appear, confirm disabling passwords. To disable the "Find iPhone" function, you need to open the iCloud section through the settings and open the "Find iPhone" section, disable the function.
Reinstallation via system update
The latest version of iTunes must be installed on your computer. Next, you need to go to the official website of the IOS developer, select the type of device on which you need to roll back ios 10 and download the version of ios 9 or ios 8. On the developer's website, you can check which version of IOS a particular Apple gadget supports. The file with the operating system for Apple gadgets has the IPSW extension.
After you have downloaded the required firmware version, you need to connect the gadget using a USB cable to your computer and start iTunes. Open the device management page. To open it, you need to hold down the Shift button and refresh the page. If you are using a MacBook, then you need to hold down the Alt button. In the explorer that opens, select the "update" option, then the old firmware version, which was downloaded in advance, confirm the reinstallation of the system.
Reinstall via system restore
Next, you need to do a number of manipulations in order for the iTunes program to launch the gadget's system recovery mode. First, you need to turn off the device for 3 seconds, hold down the lock key and without releasing it, press the "HOME" button. Secondly, after 10 seconds, release the lock key and hold the HOME button for another 30 seconds. ITunes will prompt you to do a system restore. To start the recovery of some models of gadgets, just press and hold the "HOME" button, having previously turned off the device.
In the iTunes program, choose to restore the device, accept the user agreement and confirm the action.
