iOS 11.3 Download Released, Update Now for iPhone & iPad [IPSW Links]

Mar 29, 2018 - 22 Comments

iOS 11.3 download update

Apple has released iOS 11.3 for iPhone and iPad. The final version of iOS 11.3 includes multiple bug fixes, performance improvements, and several new features.

Separately, Apple has released tvOS 11.3 for Apple TV, and watchOS 4.3 for Apple Watch. HomePod also has a 2GB software update available for the speaker system. For Mac users, macOS High Sierra 10.13.4 is available along with Security Update 2018-02 for earlier system software builds.

iOS 11.3 includes bug fixes and enhancements for iPhone and iPad, along with four new Animoji icons for iPhone X, a new Battery Health feature in the Settings app, along with small updates to various default apps like Health.

How to Download & Install iOS 11.3 Update

The easiest way to download and install iOS 11.3 is through the Settings app Software Update mechanism of iOS. Be sure to back up your iPhone or iPad to iCloud or iTunes (or both) before installing any software update.

  1. Open the “Settings” app in iOS
  2. Go to “General” and then to “Software Update”
  3. When “OS 11.3” is shown as available, tap on “Download & Install” to begin the process of installing the software update

iOS 11.3 software update available to download

Users can also install iOS 11.3 through iTunes and a computer, or by using IPSW files, but either of those requires a computer and a USB cable.

iOS 11.3 IPSW Download Links

For users who like to use IPSW to install iOS software updates, the links below point to IPSW files hosted on Apple servers. For best results, right-click and choose “Save As” and be sur the file has an .ipsw file extension.

Using IPSW is generally considered advanced and unnecessary for most users to engage in, though it is not particularly complex.

iOS 11.3 Release Notes

Full release notes accompanying the iOS 11.3 software update are as follows:

iOS 11.3 introduces new features including ARKit 1.5 with support for more immersive augmented reality experiences, iPhone Battery Health (Beta), new Animoji for iPhone X users, and more. This update also includes stability improvements and bug fixes. 

Augmented Reality 

РARKit 1.5 allows developers to place digital objects on vertical surfaces like walls and doors in addition to horizontal surfaces 

РAdds support for detecting and incorporating images like movie posters or artwork into AR experiences 

РSupports a higher resolution real world camera view when using AR experiences 

iPhone Battery Health (Beta) 

РDisplays information on iPhone maximum battery capacity and peak performance capability 

РIndicates if the performance management feature that dynamically manages maximum performance to prevent unexpected shutdowns is on and includes the option to disable it 

РRecommends if a battery needs to be replaced 

iPad charge management 

РMaintains battery health when iPad is connected to power for prolonged periods of time, such as when it is used in kiosks, point of sale systems, or stored in charging carts 


РIntroduces four new Animoji on iPhone X: lion, bear, dragon and skull 


РWhen an Apple feature asks to use your personal information, an icon now appears along with a link to detailed information explaining how your data will be used and protected 

Business Chat (Beta) РUS only 

РCommunicate with companies to easily ask questions, schedule appointments, and make purchases inside the built-in Messages app on iPhone and iPad 

Health Records (Beta) РUS only 

РAccess health records and view lab results, immunizations, and more in a consolidated timeline in the Health app 

Apple Music 

РFeatures a new music video experience, including an updated Music Videos section with exclusive video playlists 

РFind friends that have similar tastes using updated suggestions in Apple Music that reveal genres people enjoy and mutual friends that follow them 


РTop Stories now always appear first in For You 

РWatch Top Videos curated by News editors 

App Store 

РAdds ability to sort customer reviews on product pages by Most Helpful, Most Favorable, Most Critical, or Most Recent 
РImproves Updates tab information with app version and file size 


РHelps protect privacy by only AutoFilling usernames and passwords after selecting them in a web form field 

РIncludes warnings in the Smart Search Field when interacting with password or credit card forms on non-encrypted web pages 

РAutoFill for usernames and passwords is now available in web views within apps 

РArticles shared to Mail from Safari are now formatted using Reader mode by default when Reader is available 

РFolders in Favorites now show icons for the bookmarks contained within 


РAdds two new Shuangpin keyboard layouts 

РAdds support for connected hardware keyboards using the Turkish F keyboard layout 

РImproves Chinese and Japanese keyboards for better reachability on 4.7-inch and 5.5-inch devices 

РEnables switching back to the keyboard after dictation with just one tap 

– Addresses an issue where auto-correct could incorrectly capitalize some words

РFixes an issue on iPad Pro that prevented the iPad Smart Keyboard from working after connecting to a captive Wi-Fi access point 

РFixes an issue that could cause the Thai keyboard to incorrectly switch to the numeric layout when in landscape mode 


РApp Store adds accessibility support for bold and large text for display customization 

РSmart Invert adds support for images on the web and in Mail messages 

РImproves RTT experience and adds RTT support for T-Mobile 

РImproves app switching on iPad for VoiceOver and Switch Control users 

РAddresses an issue where VoiceOver incorrectly described Bluetooth status and badge icons 

РFixes an issue where end call button might not be presented in the Phone app when using VoiceOver 

РFixes an issue where in-app app rating was not accessible with VoiceOver 

РResolves an issue when using Live Listen that could distort audio playback 

Other improvements and fixes 

РIntroduces support for the AML standard which provides more accurate location data to emergency responders when SOS is triggered (in supported countries) 

РAdds support for software authentication as a new way for developers to create and enable HomeKit compatible accessories 

РPodcasts now plays episodes with a single tap, and you can tap Details to learn more about each episode 

РImproves search performance for users with long notes in Contacts 

РImproves performance of Handoff and Universal Clipboard when both devices are on the same Wi-Fi network 

– Fixes an issue that could prevent incoming calls from waking the display
РAddresses an issue that could delay or prevent playback of Visual Voicemail 

РResolves an issue that prevented opening a web link in Messages 

РFixes an issue that could prevent users from returning to Mail after previewing a message attachment 

РFixes an issue that could cause Mail notifications to reappear on the Lock screen after they had been cleared 

РResolves an issue that could cause time and notifications to disappear from the Lock Screen 

РResolves an issue that prevented parents from using Face ID to approve Ask to Buy requests 

РFixes an issue in Weather where current weather conditions may not have been updated 

– Fixes an issue where contacts may not sync with a car’s phone book when connected over Bluetooth¬†

– Addresses an issue that could prevent audio apps from playing in cars when the app was in the background

Separately, watchOS 4.3 and tvOS 11.3 are also available to download and install for Apple Watch and Apple TV, respectively. WatchOS 4.3 has a new Nightstand mode setting, along with updated music controls. HomePod users can find a large 2GB software update available for their HomePod speaker. Mac users will also find macOS High Sierra 10.13.4 or Security Update 2018-002 available as software updates, depending on which version of system software they are running.


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Posted by: Paul Horowitz in iPad, iPhone, News


» Comments RSS Feed

  1. Pope says:

    please my iPhone keeps restarting itself, am just tired of the phone, although am yet to update the ios to the 11.3version due to the restarting issue. please can anyone help me out or give me an advice on what to do

  2. Bazza says:

    Have just updated to IOS 11.3, now my iPad screen occasionally freezes and and on Facebook I’m unable to rotate the screen

  3. Jef says:

    Interesting. Since I installed IOS11 my iPhone 6 has been ridiculously slow. Now it’s back to its old self again, after this update.

  4. JB says:

    So my biggest issue (bug) was not fixed in this new iOS release. I’m referring to the bug in which my iPhone X stops responding to anything I type in (TXT, eMail, URL entry, etc.) for 7-10 seconds and then types out whatever I typed 7-10 seconds earlier, and then the cycle repeats.

    The only temporary solutions are:
    -Restart the iPhone (not good)
    -Open app switcher and close all other apps (also not fun)

    I thought it might be an app but I eventually verified that no particular app or app combination is causing it.

    I know other people have the same issue, but not everyone. So far, Apple Support has no solution that I am aware of. This is a big PIA.

    OK, rant finished. Thanks.


  5. GaryS says:

    I”m with you Katbel, I’m on 12.6.3 also. I have capped satellite service and with four devices in the household I’d be out of data in a week with all the updates. Hopefully Apple wakes up.

    • imacconvert says:

      Only person I have seen make a point about data useage other than me.
      Pet hate, Apple supply an update and never show the amount of data download. its quite arrogant to assume they only have US customers and live in Silicon valley or equivalent with fibre optic speeds and unlimited packages.
      If only. Satellite is good, but it costs.

      • Dun says:

        You shouldn’t be angry at apple. You should be angry at your government that doesn’t have decent infrastructure. Since you don’t have decent internet infrastructure you are forced to use the same technology they use in Antarctica.

        Also if your telecom companies were not an oligopoly, you might have been able to get massive LTE datacaps like most of the world. I pay $35 for 1terabyte of blazing fast, low latency LTE! and I live in a third world country.

        • Paul says:

          There is a download size indicator next to the iOS 11.3 software update package in the Settings, the size varies per device, but should be between 500mb and 2GB depending on what hardware it’s being installed onto and what is the prior version.

        • Steve Ac says:

          thanks for the link, i’m still using 12.6.3, but even if you update to 11.3 outside of iTunes, I believe that any device which uses iOS 11.3 will not be able to sync with iTunes 12.6.3, and thus a central store for apps would be lost.

  6. Michael says:

    the iMessages was in the 11.3 beta 6 release 15E216A. But I’m hearing it’s not in GM. The phone won’t do an OTA update. Only way to get GM is through IPSW. But not sure I should do this. iMessage for iCloud is working on iPhone, iPad, MacBook Air, and my iMac. But they did not release GM for MacOS 10.13.4 Beta V7 (17E197A).

  7. katbel says:

    the new update requires iTunes 12.7.3
    that I hated. Still with 12.6.3. And I don’t like to update directly from devices
    Any workaround?

    • vdiv says:

      Could create a MacOS VM with the new iTunes and use that to upgrade, or just run the upgrade on the device itself, but this is only delaying the inevitable.

  8. Ted says:

    iMessages in iCloud is delayed again? Honestly I don’t understand the feature anyway, but they hyped it up and then don’t release it which is weird.

    Anyway I don’t see any major updates with this iOS 11.3 release, but I do wonder if anyone has problems with it or if it has been flawless so far? I have learned to hold back on my software updates and let other people sort out the trouble… maybe I will update this weekend when I have spare time to troubleshoot iPhone if it has a problem.

    • Michael says:

      the iMessages was in the 11.3 beta 6 release 15E216A. But I’m hearing it’s not in GM. The phone won’t do an OTA update. Only way to get GM is through IPSW. But not sure I should do this. iMessage for iCloud is working on iPhone, iPad, MacBook Air, and my iMac. But they did not release GM for MacOS 10.13.4 Beta V7 (17E197A).

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