If you are a collector or hobbyist, there are unofficial methods, though they are complex and often "tethered" (requiring a computer to reboot). How do I download an older iOS version - Apple Community
Downloading iOS 9.0 for an is a journey back to the device's origins. While this software was revolutionary in 2015, attempting to install it today requires navigating Apple’s strict signing policies and modern compatibility issues. As of 2026, the
If you check Settings > General > Software Update , your phone will only offer the latest signed version (iOS 12.5.8). How to Install (For Enthusiasts)
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