The most common "legitimate" story for accessing Facebook on these devices involves Apple's "Last Compatible Version" feature. Old iPad iOS compatibility workaround? - Facebook
Without this specific IPA, your iOS 9.3.5 device cannot talk to Facebook's modern servers. The web browser version (m.facebook.com) works, but it’s clunky, slow, and lacks push notifications. The IPA offers a native, fluid experience.
: This bypasses the API handshake errors that cause the native legacy app to crash or show a "No Connection" error. 2. Jailbreak-Enabled "Checkmate Store"
App Store “Download an older version”
A prompt should appear asking if you want to "Download an older version of this app"; select .
When installing IPA files, users should be aware of the potential security risks, including: