“Software Update Failed An error occurred downloading iOS 16.5” on iPhone 11

To update over the air from the phone all of these requirements must be met:

• You need at least 10 GB of free storage for iOS 16 or 6 GB for iOS 15 or lower; more is better
• You must be connected to a Wi-Fi network (and not a personal hotspot) unless it is an iPhone that supports cellular 5G (12, 13, 14 or SE 3rd edition) and has a 5G network connection
• The phone must be charged to at least 50%, and preferably plugged in so it stays above 50% during the update
• The phone must not be in Low Power Mode
• The phone must not be connected through VPN, and it may be necessary to delete any VPN apps and VPN profiles
• The phone cannot be in Airplane mode and must have a cellular data connection
• You cannot still have a beta of a previous version installed on the phone
• You cannot have a previous version that was downloaded, but not installed - go to Settings/General/iPhone Storage to look; if you find an iOS installer, delete it

If you can't meet all of them you can still update using your computer.

Follow the guidance in the Best Answer at the top of this page.

What if I DO meet all of them and I still keep getting attached msg display?

Failed An error occurred downloading iOS 16.7. When I update

Saithjunaid108 wrote:

iPhone 11 Pro software update 16.5

Follow the guidance in the Best Answer at the top of this page.

I have problems 17 update

Why my iPhone 11 Pro always failed while updating to iOS 17.4.1

My problem I Phone 12 software update failed an error occurred downloading ios 18 beta 3.

I think that you need to download the newest ios, so 17.5.1 I think. If the problem is that It will not let you download the newest ios, try backing up your data, and then erasing all content and settings

iPhone 11 Pro software update 16.5

try updating again when its plugged in to the power.

support apple .com iphone restore