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mllahr Author

Level 1

4 points

Unable to install update

There is enough space for the iOS 15.4.1 update on our iphone 7, but when I try to install it (while my phone is plugged in and on wifi), it gives back an error: Unable to install Update. An error occurred installing iOS 15.4.1.

Does anyone know what the error is behind this and how to fix it?

iPhone 7, iOS 13

Posted on Apr 30, 2022 2:22 PM

Top-ranking reply

Lawrence Finch

Level 10

212,108 points

Posted on Apr 30, 2022 2:39 PM

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

You need at least 6 GB of free storage
You must be connected to a Wi-Fi network (and not a personal hotspot) unless it is an iPhone 12 or 13 series with an active 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
You cannot still have a beta 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.

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Unable to install update

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