Am unable to install iOS 15.7 on my iPhone 7plus?

Hi kingsley142,

We're happy to provide some assistance.

Based on your original post, we recommend the troubleshooting steps via the link below since you cannot update to iOS 15.7 on your iPhone.

If your iPhone or iPad won't update

To perform the troubleshooting actions recommended by the article above, please read through and complete the steps in the section titled "If you can't reach the update server or can't verify the update."

If you try to update your device, you might see one of these messages:

"Unable to Check for Update. An error occurred while checking for a software update."

"Unable to Install Update. [Software] update requires a network connection."

Try updating your device again using the same network. If you still see one of these messages, try updating your device using another network or update your device with your computer:

*Update your device using a Mac with macOS Catalina or later

*Update your device using a Mac with macOS Mojave or earlier, or a Windows PC

If the issue happens again after trying to update with multiple networks, remove the update.

We're recommending the steps above because they directly address the issue you initially reached out to the community about, which is that you're unable to update your iPhone.

If the original problem persists after trying our suggested troubleshooting steps, provide us with specifics on what you see for more help, and we will continue from there.

Thanks for using the Apple Support Communities.

Cheers!