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.
It is highly recommended to always use the most recent driver version available. Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer. It increases further the functionality of the most famous mobile operating system in the world. Testers will receive a public beta later in the month, the final public version of iOS 11 will arrive in fall.
To see whether your device is supported or not, you can check your eligibility. Only test devices should be used. We also recommend you to make a complete backup of your device, either with iCloud or iTunes, before installing iOS 11 GM. Copy it then.
You can also take the OTA route for downloading firmware. Step 6: Go back to iTunes-restorable firmware download section, ensure the latest version of iTunes is there on your PC. Launch iTunes and connect iDevice to PC.
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