"An error occurred installing ios 17.5.1" iPhone Update Message

Try and delete the update file and try to update again:

1. Go to Settings > General > [Device name] Storage.
2. Find the update in the list of apps.
3. Tap the update, then tap Delete Update.
4. Go to Settings > General > Software Update and download the latest update.

See this user tip that I have written about the update process for further reference

Updating/upgrading your iPhone - Apple Community

Update your iPhone, iPad, or iPod touch

• If you have an iPhone 5S or 6/6plus, the highest you can update to is 12.5.7

• If you have an iPhone 6S through 7, or SE 1st generation, you can update to 15.8.2

• If you have an iPhone 8 or X, you can update to 16.7.8

• If you have an iPhone SE (2nd generation or later), or XR through 15, you can update to 17.5.1

Go to Settings > General > Software Update.

This link will show you how to update your iPhone, iPad, or iPod touch using WiFi -

Update your iPhone or iPad - Apple Support

This link will show you how to update using your computer -

Update iOS on iPhone - Apple Support

See this article.

If your iPhone or iPad won't update - Apple Support

That 100% working thanks bro

Volver iOS 17.5.1

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THANK U 🙏

I need to download IOS 17.5.1 in my phone’s settings. Can you help me?