Head to website, choose your device, and download the signed IPSW. Only proceed with it after creating proper backups. If the above two approach fail to download the software update file, you can manually download the IPSW (iPhone Software) file and use it to install the software update.ĭo note that this approach erases the device contents and sets it up as a brand new device. iTunes will check with the software update server, download the update and install it onto the iPhone.Īpproach III: Install the update manually with iTunes Select the device in iTunes, click on Summary and click on Check for Update button. You'll need to unlock the iPhone and will see and alert asking you to trust the computer. If this is the first time you are connecting the iPhone to this computer, the computer will ask for your permission to access the iPhone. Connect your iPhone to the USB port via the Lightning cable and launch iTunes.

If you have a Mac or a PC handy with iTunes installed and an active Internet connection, you can download the software update on the computer and install in on device. You may also toggle Wi-Fi off and on before re-trying. Tap on Close button in the alert shown and try again after some time. Such issues are often temporary and get resolved automatically in a short while. Software update download could fail due to Internet connectivity issues or an issue at the Apple's software update server end. To install the software update, try the following approaches one by one: Approach I: Wait for some time and try again Make sure you have an active Internet connection. This error can occur due to a variety of temporary issues.

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