Installing an older version of Facebook on iOS 12.5.5 is still possible by using the Apple App Store's built-in feature to download the "last compatible version," provided you have previously "purchased" or downloaded the app on your Apple ID. If the app has never been linked to your account, you will need a newer iOS device to first add it to your purchase history. Method 1: The "Purchased History" Trick
While the official Facebook Help Center states that the app requires iOS 13.4 or later, you can still install a compatible older version on iOS 12.5.5 using a simple workaround. How to Install an Older Version facebook old version for ios 1255 install
Enter Facebook for iOS version 1255. For a niche community of digital archivists, jailbreakers, and nostalgic users, this specific build represents the "goldilocks" era of the mobile social network. This article explores why version 1255 matters, the technical hurdles of installing it on modern iOS, and a practical guide for those brave enough to attempt the downgrade. Installing an older version of Facebook on iOS 12
Security Risks: Older versions of the app do not receive the latest security patches or features. How can i install Facebook in ios 12.5.5 - Apple Community Feedback to Facebook : Provide feedback through Facebook's
The Process:
Concept: A specialized utility feature within iOS (or a third-party guardian app) designed to preserve, archive, and forcibly install specific legacy versions of applications—such as Facebook v125.5—bypassing the App Store’s mandatory update checks and iOS version gating.