How to Update the iPhone Operating System

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Introduction to Checking for New iPhone Firmware

iPhone firmware check, step 1

Given that the release of new firmware for the iPhone is usually a bit of an event and widely discussed in many places, you’re not likely to be surprised by its release. However, if you’re not sure whether you have the newest iPhone firmware, the process of checking (and installing the update, if one is available) is quick.

Begin by syncing your iPhone with your computer.

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Click "Check for Update"

iPhone firmware check, step 2
When the sync is complete, the iPhone management screen will have a button in the middle that reads “Check for Update.” Click that button.
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If Update Is Available, Continue

iPhone firmware check, step 3

ITunes will check to see whether your iPhone has the latest firmware on it. If it does, you’ll see a message saying that.

If there’s an update available, follow the onscreen instructions to download and install it