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Visit Troubleshoot & Resolve to fix software update issues.For additional help, visit Apple Support: Find the software version on your iPhone, iPad, or iPod.If the iOS version and the current software update details match, the device has the latest software.If a Carrier update is available, you'll be prompted to install it.Verify software update & update Carrier version To learn more, visit Apple Support: Update your Apple Watch.Maintain a steady Internet connection on both Apple Watch and iPhone during this process to ensure a successful software update.Download the software to the iPhone, and then continue on with Apple Watch.To learn more, visit Apple Support: Update the iOS software on your iPhone, iPad, or iPod touch.Tap Software Update, then Download and Install.Plug your device in to power and connect to Wi-Fi.Next, view the Previous updates section for details about the most recent software installed on your device. If your device isn’t eligible for the latest update, follow the steps to update and verify the latest software available for your device.How to back up your iPhone, iPad, and iPod touch.Update your iPhone, iPad, or iPod touch.
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If you enter your Apple ID and password and still can’t sign in, visit Apple Support: Find My iPhone Activation Lock.
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