iOS 17.3 (21D50) for iPhone 15 Plus

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

Release DateJanuary 22, 2024
Upload DateJanuary 13, 2024
FilenameiPhone15,5_17.3_21D50_Restore.ipsw
Filesize7.4 GiB
SHA256sum69ef153c6ab20b5b6e7ae009a40413c896b06b4a5645c82e8616ff98951fb7e6
MD5sum4b142d325318b83b4e4c43ed7b80cb25
SHA1sumdc9e3f32c76c5864796920f0018b8f1337cf3119
IdentifieriPhone15,5

iOS 17.3 Release Notes

Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

Stolen Device Protection

  • Stolen Device Protection increases security of iPhone and Apple ID by requiring Face ID or Touch ID with no passcode fallback to perform certain actions

  • Security Delay requires Face ID or Touch ID, an hour wait, and then an additional successful biometric authentication before sensitive operations like changing device passcode or Apple ID password can be performed

Lock Screen

  • New Unity wallpaper honors Black history and culture in celebration of Black History Month

Music

  • Collaborate on playlists allows you to invite friends to join your playlist and everyone can add, reorder, and remove songs

  • Emoji reactions can be added to any track in a collaborative playlist

This update also includes the following improvements:

  • AirPlay hotel support lets you stream content directly to the TV in your room in select hotels

  • AppleCare & Warranty in Settings shows your coverage for all devices signed in with your Apple ID

  • Crash detection optimizations (all iPhone 14 and iPhone 15 models)

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

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