iOS 17.3 (21D50) for iPhone 15 Pro

✗ 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
FilenameiPhone16,1_17.3_21D50_Restore.ipsw
Filesize7.6 GiB
SHA256sum166efc79f99eae976ebd739a9e8e92410e28d45529558dd3c9d8d65d3bb8a58a
MD5sum14f347f239d1e50eafed13e5980441f8
SHA1sum71d483e84136d16e8051eaa7d52d96404e2cec0f
IdentifieriPhone16,1

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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