Even Apple does not allow installation of iOS 9 on iPhones anymore. If you own an iPhone 6 running iOS 12, you cannot downgrade to iOS 9 because Apple’s signing server rejects the request.
From a legal perspective, installing a proprietary operating system like iOS on non-Apple hardware falls into a gray area. Even if the technical barriers didn't exist, doing so would likely violate Apple's . Apple's software is not open source; it is licensed for use exclusively on Apple-branded hardware. Reverse-engineering iOS to port it to other devices could infringe on Apple's copyrights and patents. The "iOS on Android" community remains a niche, hobbyist pursuit, and no major developments are on the horizon. Download ios 9 signed zip for android
Instead of chasing a non-existent download, consider these realistic options: Even Apple does not allow installation of iOS
However, there are instances where developers have managed to port iOS to Android devices, albeit with significant limitations and caveats. These ports often require a high degree of technical expertise and are not officially supported by Apple or the device manufacturers. Even if the technical barriers didn't exist, doing