Changes:
- This update provides important bug fixes and security updates and is recommended for all users.
Installation Instructions:
Windows
- Install the latest version of iTunes.
- Plug your device in to your PC.
- Open iTunes, and navigate to your device.
- Hold the Shift key on your keyboard, and press "Restore".
- Select the .ipsw file that you downloaded.
- Wait for the restore to complete, and the device to reboot.
macOS
- Plug your device in to your Mac.
- Navigate to your device in Finder.
- Hold the Option or Alt key on your keyboard, and press "Restore".
- Select the .ipsw file that you downloaded.
- Wait for the restore to complete, and the device to reboot.
Linux
- Install idevicerestore.
- Plug your device in to your PC.
- Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
- To perform a full erase restore, type idevicerestore -e <filename>.ipsw and press enter.
- Wait for the restore to complete, and the device to reboot.
About iPhone / iPad / iPod Firmware:
iOS (iPhone and iPod Firmware) is a collection of firmware update files (IPSWs) for Apple's popular iPod and iPhone devices. The IPSW files provide a very quick method for updating the software on your iOS device via iTunes.
Instal this firmware and your device can benefit from improved system stability, network-related functions and performance, enhanced touch experience, various fixes for problems encountered throughout the device's usage time, as well as several other changes.
Bear in mind that, before you get this release, you must check to see if the available firmware is developed for your model and SKU (stock keeping unit) – if you apply an incompatible software, the device will encounter serious malfunctions and can even be rendered unusable.
Please make sure the you reboot your device after the update process is complete and check to see if you have the latest available iOS version.