IPCC bundle files for different iOS Versions and devices. Update your carrier bundle (no jailbreak required)
- Search for your device e.g. iPhone 12 Pro Max.
- Search for an iOS higher than your current iOS e.g. 14.8 when you have 14.3 installed.
- You can do this manually too if you prefer by downloading the respective ipsw file from ipsw.me. Extract it and mount the largest dmg file. Navigate to System>Library>Carrier Bundles>iPhone.
- Search for your carrier and copy the bundle file to your Computer e.g. "TMobile_Germany.bundle".
- Create a new folder named "Payload".
- Copy the bundle file inside the "Payload" folder.
- Zip the "Payload" folder and rename it as per your carrier bundle with an ipcc extension e.g. "TMobile_Germany.ipcc".
- Enable .ipcc support in iTunes/Finder by opening Terminal (on Mac) or CMD (on Windows) and pasting the following command:
- macOS 10.14 and older
defaults write com.apple.itunes carrier-testing -bool true
- macOS 10.15 and newer
defaults write com.apple.AMPDevicesAgent carrier-testing -bool YES
- Windows
"%ProgramFiles%\iTunes\iTunes.exe" /setPrefInt carrier-testing 1
- Now use iTunes/Finder to update the .ipcc carrier bundle. While pressing Option (Mac) or Shift (Windows) in iTunes/Finder, click on update and select the .ipcc file.
- Restart your iPhone.