Running Facebook on legacy hardware like the iPad 2 or iPhone 4s requires navigating the limitations of iOS 9.3.5, which no longer supports the latest Facebook app versions. To restore functionality, you must either download the last compatible version from official channels or sideload a specific Facebook IPA designed for older systems. Top Methods to Install Facebook on iOS 9.3.5

: Because iOS 9.3.5 is so old, it is easily jailbreakable (using tools like ). Once jailbroken, you can install AppSync Unified

Method 1: Using Cydia Impactor

or a "Lite" wrapper, which bypasses the need for an IPA entirely while maintaining better security. step-by-step guide