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MACApollo Author

Level 1

4 points

iPhone7 Plus Failing Update to IOS 15.1

I am experiencing an installation error "Unable to Install Update" "An error occurred installing iOS 15.1"

I have tried all different suggestions including deleting and re-downloading the update, freeing up storage and restarting. After downloading I still have 2.3GB available.

Any suggestions? Many Thanks in advance.

iPhone 7 Plus, iOS 13

Posted on Nov 24, 2021 9:07 AM

Top-ranking reply

Raicya

Level 10

209,061 points

Posted on Nov 24, 2021 10:10 AM

MACApollo wrote:

, freeing up storage and restarting. After downloading I still have 2.3GB available.

You need about 6 GB for the update.

See this Apple articles below

If you need more space for an update on your iPhone, iPad, or iPod touch

https://support.apple.com/en-us/HT203097

How to check the storage on your iPhone, iPad and iPod touch

https://support.apple.com/en-gb/HT201656

What's the difference between device storage and iCloud storage?

https://support.apple.com/en-us/HT206504

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iPhone7 Plus Failing Update to IOS 15.1

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