iPhone 15 setup bug confirmed by Apple — here’s how to fix the problem

Apple iPhone 15 review.
(Image credit: Future)

iPhone 15 devices are landing in user's hands from today, letting iPhone owners upgrade to the latest and best version of Apple’s smartphone. Unfortunately that experience is being marred for some, with Apple confirming there is a bug that could mess up the set-up process — leaving affected phones in an update loop.

You’ll know if this happens to you, because your iPhone will be stuck in the boot screen — which is the Apple logo on a black background. It sounds like this bug is related to iOS 17, with Apple confirming that iPhone 15 and iPhone 15 Pro devices running the new software can be affected. However it may also affect anyone setting up an older device and trying to transfer data from an iPhone already running iOS 17.

Thankfully there is a way to fix the problem. According to Apple you need to put the device into DFU mode and restore it using a computer.

The process for doing this is a lot simpler than it sounds, with the first stage being to connect the iPhone to a PC or Mac with a cable — USB-C or Lightning depending on which iPhone you have. From there you need to press and hold the volume down and side buttons. Keep hold of those buttons until the iPhone reboots.

According to Apple you need to put the device into DFU mode and restore it using a computer.

The screen will then display an image of a laptop and a cable, which is your prompt to plug the phone in if you haven’t already. Once connected your phone will be visible in Finder (MacOS) or iTunes (Windows) — with the option to restore or update. Hitting Restore will reset the phone.

Once your phone has been reset, you can restart the setup process. iPhone 15 owners may find that this includes an additional software update that you didn’t get before, which should have fixed the update loop bug.

Older models don’t have this fix yet, and Apple’s advice is to transfer your data using an iCloud Backup instead. Be sure to check out our guide on how to back up your iPhone, to ensure that all data is transferred onto the device in question. You’ll be given the option to transfer your data during the setup process, and be sure to tap the From iCloud Backup option.

Once your phone is set up and ready to go, you can enjoy all the new features and upgrades on offer. Here are 9 iOS 17 features you should try first, and help familiarize yourself with the software.

More from Tom's Guide

TOPICS
Tom Pritchard
UK Phones Editor

Tom is the Tom's Guide's UK Phones Editor, tackling the latest smartphone news and vocally expressing his opinions about upcoming features or changes. It's long way from his days as editor of Gizmodo UK, when pretty much everything was on the table. He’s usually found trying to squeeze another giant Lego set onto the shelf, draining very large cups of coffee, or complaining about how terrible his Smart TV is.

Read more
iOS 18 home screen customization features
Apple will no longer allow users to downgrade from iOS 18.3 — here’s why
Apple iPhone 16 held in the hand.
How to force restart your iPhone 16 — what to do when your device freezes
iPhone 16e review.
iPhone 16e is facing Bluetooth problems — here's what's going on
iOS 19 logo on an iPhone
iOS 19 — all the biggest rumors so far
iOS 19 logo on an iPhone
5 biggest iOS 19 rumors — here’s how Apple could transform your iPhone
Apple iPhone 16 held in the hand.
How to factory reset your iPhone — follow these steps
Latest in iPhones
iPhone 16 with Apple Intelligence logo for iOS 18.1
iOS 18.4: All the newest Apple Intelligence features coming to your iPhone
Apple maps logo on iPhone screen
I avoided Apple Maps for trip planning — but these iOS 18 features are changing my mind
New emojis with iOS 18.4 beta release.
iOS 18.4 beta brings 8 new emoji to your iPhone — here's all the new options
An image of an iPhone screen showing the Safari app icon in the center
I got tired of Safari revealing my web searches in iOS 18.4 — this setting fixes that
iPhone Flip Concept
Foldable iPhone delays — there’s a bigger problem going on at Apple
iPhone 17 Air render
iPhone 17 Air — new survey could be bad news for Apple's super thin iPhone
Latest in News
Disney Plus logo
Disney Plus upgrade just fixed one of my biggest problems with the home page
Tom Hiddleston as Robert Laing in "High Rise" now streaming on Netflix
5 best Netflix movies in March you haven't watched yet
iPhone 16 with Apple Intelligence logo for iOS 18.1
iOS 18.4: All the newest Apple Intelligence features coming to your iPhone
Maria Debska in "Just One Look" now streaming on Netflix
3 best Netflix shows in March you haven't watched yet
Split image featuring the Galaxy S25 Edge (left) and Galaxy S25 Ultra (right)
Samsung Galaxy S25 Edge just tipped for two Galaxy S25 Ultra-level features
Wolfenstein: The Old Blood
Amazon is giving away a ton of free games for its Big Spring Sale — here’s how to claim yours