Can't update my iPhone 16 Pro Max

What is happening when updating your iPhone?

If the update seems stuck, remove the update file and try again

1. Go to Settings > General > [Device name] Storage.
2. Find the update in the list of apps.
3. Tap the update, then tap Delete Update.
4. Go to Settings > General > Software Update and download the latest update.

If this is not working you might want to update via a pc or Mac instead

Update your iPhone using a Mac with macOS Catalina or higher

On a Mac with macOS Catalina or higher, you will use the finder in order to upgrade your iPhone. Make sure to Back up your device before starting the upgrade process.

On a Mac with macOS Catalina or later, you will follow the following steps:

1. Open a finder window
2. Connect your device to your Mac via a lighting to usb A or a lightning to usb c cable On the iPhone 15 series, use an usb c to usb c cable.
3. Select your device in the left sidebar of the finder window
4. click general, then click check for update
5. Click download and update.
6. If asked, enter your iPhone passcode

Update your iPhone via a Mac running macOS Mojave or earlier, or on a Windows PC

On macOS Mojave or earlier, or on a windows machine, we won't use the Finder to upgrade your iOS

Instead, we will use iTunes. Make sure to Back up your device before doing any update or upgrade to your phone.

1. Open iTunes
2. connect your device to the computer with an lightning to usb a or a lightning to usb c cable. On the iPhone 15 series, use an usb c to usb c cable.
3. Click device button in the iTunes toolbar
4. In the summary tab, click check for update
5. Click download and update, follow The on screen instructions
6. If asked, enter your iPhone passcode.

See this user tip I have written about the upgrade process for further reference

Updating/upgrading your iPhone - Apple Community

Hello~ What happened when you tried? In the meantime…

If your iPhone or iPad won't update - Apple Support

~Katana-San~

So, what happens when you try?

What error message appears?

Welcome and thank you for reaching out. 🤗

Try the following steps:

• Disable any VPN connections and restart your iPhone or tell Siri: "Restart".
• Learn how to update your iPhone to the latest version of iOS.
• Learn what to do if your iPhone won’t update.

NOTE: According to Apple: After a software update is installed for iOS, iPadOS, tvOS, watchOS and visionOS, it cannot be downgraded to the previous version.

Need more help?

• United States: 1-800-APLCARE.
• Contact Support.
• iPhone Support.
• iPhone User Guide.

Good luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer