✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
| Release Date | January 28, 2020 |
|---|---|
| Upload Date | January 22, 2020 |
| Filename | iPhone11,2,iPhone11,4,iPhone11,6,iPhone12,3,iPhone12,5_13.3.1_17D50_Restore.ipsw |
| Filesize | 4.7 GiB |
| SHA256sum | 49acb4c790dbb3a6882cd5bd4d59a95c54ac6ba3524d3098e585f644ca855059 |
| MD5sum | 75616afe5539c96d5d8f55027a21fb5f |
| SHA1sum | 14e7d124f5c48f8562319bd30345cf70063676f4 |
| Identifier | iPhone11,4 |
iOS 13.3.1 includes bug fixes and improvements. This update:
Fixes an issue in Communication Limits that could allow a contact to be added without entering the Screen Time passcode
Adds a setting to control the use of location services by the U1 Ultra Wideband chip
Addresses an issue that could cause a momentary delay before editing a Deep Fusion photo taken on iPhone 11 or iPhone 11 Pro
Resolves an issue with Mail that could cause remote images to load even when the “Load Remote Images” setting is disabled
Fixes an issue that could cause multiple undo dialogs to appear in Mail
Addresses an issue where FaceTime could use the rear facing ultra-wide camera instead of the wide camera
Resolves an issue where push notifications could fail to be delivered over Wi-Fi
Addresses a CarPlay issue that could cause distorted sound when making phone calls in certain vehicles
Introduces support for Indian English Siri voices for HomePod
For information on the security content of Apple software updates, please visit this website: