Earlier iPhone models (click on your model to download iOS 11.1.2):

What's New in iOS 11.2.2:

This update re-enables remote access for shared users of the Home app. The hole which prompted the recall has now been fixed.

Apple Pay Cash (US only)

  • Send, request and receive money from friends and family with Apple Pay in Messages or by asking Siri

Other improvements & fixes:

  • Adds support for faster 7.5W wireless charging on iPhone 8, iPhone 8 Plus and iPhone X with compatible third-party accessories
  • Introduces three new Live wallpapers for iPhone X
  • Improves video camera stabilization
  • Adds support in Podcasts to automatically advance to the next episode from the same show
  • Adds support in HealthKit for downhill snow sports distance as a data type
  • Fixes an issue that could cause Mail to appear to be checking for new messages even when a download is complete
  • Fixes an issue that could cause cleared Mail notifications from Exchange accounts to reappear
  • Improves stability in Calendar
  • Resolves an issue where Settings could open to a blank screen
  • Fixes an issue that could prevent swiping to Today View or Camera from the Lock Screen
  • Addresses an issue that could prevent Music controls from displaying on the Lock Screen
  • Fixes an issue that could cause app icons to be arranged incorrectly on the Home Screen
  • Addresses an issue that could prevent users from deleting recent photos when iCloud storage is exceeded
  • Addresses an issue where Find My iPhone sometimes wouldn't display a map
  • Fixes an issue in Messages where the keyboard could overlap the most recent message
  • Fixes an issue in Calculator where typing numbers rapidly could lead to incorrect results
  • Addressed an issue where the keyboard could respond slowly
  • Adds support for real-time text (RTT) phone calls for the deaf and hard of hearing
  • Improves VoiceOver stability in Messages, Settings, App Store and Music
  • Resolves an issue that prevented VoiceOver from announcing incoming Notifications

What's New in iOS 11.0:

App Store

  • All-new App Store designed for discovering great apps and games every day
  • New Today tab helps you discover new apps and games with stories, how-to guides and more
  • New Games tab to find new games and see what's most popular with top game charts
  • Dedicated Apps tab with top picks, dedicated app charts and app categories
  • App pages include more video previews, Editors' Choice badges, easier access to user ratings and information about in-app purchases

Siri

  • New Siri voice is more natural and expressive
  • Translate English words and phrases into Chinese, French, German, Italian or Spanish (beta)
  • Siri suggestions based on your usage of Safari, News, Mail and Messages
  • Works with notes apps to create to-do lists, notes and reminders
  • Works with banking apps for account transfer and balances
  • Works with apps that display QR codes
  • Hindi and Shanghainese dictation

Camera

  • Portrait mode now supports optical image stabilisation, HDR and True Tone flash
  • Photos and videos will take up half the space with the new HEIF and HEVC image and video formats
  • Redesigned set of nine filters optimised for natural skin tones
  • Automatically identify and scan QR codes

Photos

  • Loop, Bounce and Long Exposure Live Photo effects
  • Mute, trim or choose a new key photo for Live Photos
  • Memory Movies automatically adapt content for portrait and landscape orientation
  • More than a dozen new memory types including pets, babies, weddings and sporting events
  • People album is more accurate and stays up to date across devices with iCloud Photo Library
  • Animated GIF support

Maps

  • Indoor maps for major airports and shopping centres
  • Lane guidance and speed limit information with Turn-by-turn directions
  • One-handed zoom with double tap and swipe
  • Interact with Flyover by moving your device

Do Not Disturb While Driving

  • Automatically silences notifications while driving and keeps iPhone silent and the display off
  • Optional iMessage auto-reply to alert selected contacts that you're driving

New features designed for iPad

  • An all-new Dock provides quick access to your favourite and recently used apps and can even be shown on top of active apps
    • Dock resizes so you can add all your favourite apps
    • Recently used and Continuity apps are available on the right
  • Enhanced Slide Over and Split View
    • Apps can be easily started in Slide Over and Split View from the Dock
    • Slide Over and background apps now run simultaneously
    • Apps in Slide Over and Split View can now be placed on the left side of the screen
  • Drag and drop
    • Move text, images and files between apps on iPad
    • Multi-Touch to move multiple items at the same time
    • Spring-loading to move content between apps
  • Markup
    • Markup works across documents, PDFs, web pages, photos and more
    • Instantly mark up anything in iOS – just place Apple Pencil on what you want to mark up
    • Create a PDF and mark up anything that can be printed
  • Notes
    • Instantly create a new note by tapping the Lock screen with Apple Pencil
    • Inline drawing available by simply placing Apple Pencil in the body of a note
    • Search handwritten text
    • Document scanner auto-corrects for skewing and uses image filters to remove shadows
    • Table support to organise and display information
    • Pin important notes to the top of the list
  • Files
    • All-new Files app to browse, search and organise files
    • Works with iCloud Drive and third-party cloud file providers
    • Recents view for quick access to recently used files across all apps and cloud services
    • Create folders and sort files by name, date, size and tags

QuickType

  • Flick down on letter keys to enter numbers, symbols and punctuation marks on iPad
  • One-handed keyboard support on iPhone
  • New keyboards for Armenian, Azerbaijani, Belarusian, Georgian, Irish, Kannada, Malayalam, Maori, Odia, Swahili and Welsh
  • English input on the 10-key Pinyin keyboard
  • English input on the Japanese Romaji keyboard

HomeKit

  • New accessory types including AirPlay 2 speakers, sprinklers and taps
  • Expanded occupancy-, time- and accessory-based triggers
  • QR code and tap-to-pair accessory setup support

Augmented Reality

  • Augmented reality technologies that apps from the App Store can use to deliver content on top of real-world scenes for interactive gaming, immersive shopping experiences, industrial design and more

Machine Learning

  • Core machine learning technologies that apps from the App Store can use to deliver intelligent features with machine learning data processed on device for high performance and user privacy

Other features and improvements

  • Control Centre redesign brings all controls on one page
  • Control Centre custom controls including accessibility, guided access, magnifier, text size, screen recording and Wallet
  • Apple Music now helps you discover music with friends. Create a profile so friends can listen to playlists you've shared and see the music you listen to most
  • Apple News now includes Top Stories picked just for you, recommendations from Siri, the best videos of the day in Today View, and great stories selected by our editors in the new Spotlight tab
  • Automatic Setup signs you in to iCloud, Keychain, iTunes, App Store, iMessage and FaceTime with your Apple ID
  • Automatic Setup restores device settings including language, region, network, keyboard preferences, places you frequently visit, how you talk to Siri, and home and health data
  • Easily share access to your Wi-Fi networks
  • Storage optimisation notifications, and free up space in Settings for apps like Photos, Messages and more
  • Emergency SOS calls emergency services based on your current location and automatically notifies emergency contacts, shares your location and displays your Medical ID
  • FaceTime lets you capture Live Photos from the other person's Mac or iPhone camera
  • Easily check Flight status in Spotlight and Safari
  • Definitions, conversions and maths support in Safari
  • Russian and English bilingual dictionary
  • Portuguese and English bilingual dictionary
  • Arabic system font support

Accessibility

  • VoiceOver description support for images
  • VoiceOver table and list support in PDFs
  • Type to Siri support for basic search queries
  • Spoken and braille caption support for videos
  • Dynamic Type increases text and app UI to larger sizes
  • Redesigned Invert Colours makes media content easier to view
  • Highlight Colours improvements in Speak Selection and Speak Screen
  • Switch Control typing can scan and type whole words at a time

Previous versions:

Download links for iOS 10.1.1 (previous version) 2016-11-01:

Download links for iOS 10.1 (previous version) 2016-10-25:

Download links for iOS 10.0.2 (previous version) 2016-09-23:

Download links for iOS 10.0.1 (previous version) 2016-08-25:

Download links for iOS 9.3.5 2016-08-25:

Download links for iOS 9.3.4 2016-08-04:

Download links for iOS 9.3.3 2016-07-19:

Download links for iOS 9.3.2 2016-05-16:

Download links for iOS 9.3.1 2016-04-04:

Download links for iOS 9.3 2016-03-22:

Download links for iOS 9.2.1:

iPhone 6s Plus (iPhone 8,2)
iPhone 6s (iPhone 8,1)
iPhone 6 (iPhone 7,2)
iPhone 6 Plus (iPhone 7,1)
iPhone 5s China (iPhone 6,2)
iPhone 5S GSM (iPhone 6,1)
iPhone 5C Global (iPhone 5,4)
iPhone 5C GSM (iPhone 5,3)
iPhone 5 Global (iPhone 5,2)
iPhone 5 GSM (iPhone 5,1)
iPhone 4S (iPhone 4,1)

Download links for iOS 9.2:

Download links for iOS 9.1:

Download links for iOS 9.0.2:

Download links for iOS 9.0.1:

Download links for iOS 9.0:

Download links for iOS 8.4.1:

Download links for iOS 8.4:

Download links for iOS 8.3:

Download links for iOS 8.2:

Download links for iOS 8.1.3: