How to update iPhone 8 to iOS 15.5
How can I update my iPhone 8 pulse to iOS 15.5
iPhone 8 Plus, iOS 15
How can I update my iPhone 8 pulse to iOS 15.5
iPhone 8 Plus, iOS 15
See how here --> Update iOS on iPhone - Apple Support
Note: If you have skipped a LOT of updates (which it appears you have), you may need to use your computer to update your iPhone. The following links will help depending on whether your computer is Windows or Mac:
Update your iPhone, iPad, or iPod touch with iTunes - Apple Support
Update your iPhone, iPad, or iPod touch with the Finder - Apple Support
See how here --> Update iOS on iPhone - Apple Support
Note: If you have skipped a LOT of updates (which it appears you have), you may need to use your computer to update your iPhone. The following links will help depending on whether your computer is Windows or Mac:
Update your iPhone, iPad, or iPod touch with iTunes - Apple Support
Update your iPhone, iPad, or iPod touch with the Finder - Apple Support
You can't update an iPhone 8 to iOS 15.5 but an iPhone 8 can be updated to iOS 16.7.13. iOS 15.5 hasn't been signed by Apple in quite some time.
Apple stopped signing it and other intermediate OSes. To install the latest release, use the Software Update function in Settings or a computer.
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Then teach me how to update it
Then teach me how to update it
How to update iPhone 8 to iOS 15.5