Need help to up date my iPhone

Which iOS version is currently installed on your iPhone 7 Plus? The highest iOS version that can be installed on an iPhone 7 Plus is iOS 15.7.4 and nothing higher. Which error message do you get when you attempt to update your iPhone?

——

Make sure that your iPhone is setup to meet the following requirements before you attempt to update the iOS version over a Wi-Fi Network. Open Settings ➡️ General ➡️ Software Update: If there is an update available for your iPhone then it will be listed here. Follow the on-screen instructions to download and update your iPhone. 

• Your iPhone must have a fast Wi-Fi connection; you cannot update over cellular data or a cellular hotspot
• The iPhone can not be in Low Power mode
• The battery state of charge must be above 50%
• Your iPhone must have at least 8GB or more free storage space
• Your iPhone cannot be connected through VPN
• You should leave the phone plugged in until it finishes updating, both to assure that it remains above 50% and to keep Wi-Fi enabled (Wi-Fi turns off when the phone sleeps if not connected to power).

Axel F.

Ladysent ~ iPhone 7 Plus cannot be updated beyond iOS 15:

iOS 16 and iPadOS are compatible with these devices

...Found by searching Apple's Knowledge Base.

õ¿õ¬