To get version 4.2.1, you cannot rely on standard purchase history. You need the raw (iOS App Store Package).
Because Apple's current App Store often prevents direct downloads for older firmware, you may need to sideload the file using one of the following methods: install facebook 4.2.1 ipa
is an old version of the Facebook app, originally released around 2013–2014, designed for iOS 6 and early iOS 7 devices. Installing it on modern iOS versions (via sideloading or jailbreak) is not officially supported, but it can be useful in very specific scenarios. To get version 4
Read community discussions about getting older apps to work on To get version 4.2.1
Modern Facebook is a behemoth. It runs background