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
How to update / restore your iPhone/iPad/iPod using the downloaded IPSW file:
1. Download the firmware to your hard drive
2. Connect your device to your Mac or PC using the connection cable
2. On Macs OPTION-click and on PCs SHIFT-click the Update / Restore button in iTunes
3. Select the IPSW file you downloaded to update / restore your device
4. Wait for the iPhone / iPad / iPod to finish the process
About iPhone / iPad / iPod Firmware:
iOS (iPhone and iPod Firmware) is a collection of firmware update files (IPSWs) for Apple's popular iPod and iPhone devices. The IPSW files provide a very quick method for updating the software on your iOS device via iTunes.
Instal this firmware and your device can benefit from improved system stability, network-related functions and performance, enhanced touch experience, various fixes for problems encountered throughout the device's usage time, as well as several other changes.
Bear in mind that, before you get this release, you must check to see if the available firmware is developed for your model and SKU (stock keeping unit) – if you apply an incompatible software, the device will encounter serious malfunctions and can even be rendered unusable.
Please make sure the you reboot your device after the update process is complete and check to see if you have the latest available iOS version.