Search for and install . This tweak bypasses iOS code-signing restrictions. Install a file manager like Filza via Cydia.
Try to download Facebook. Apple may offer to download the "last compatible version."
When you try to download Facebook from the App Store today, you are met with a frustrating error: "This application requires iOS 13.4 or later." Because Facebook has revamped its architecture, the standard App Store path is broken for vintage hardware.
Click . You may be prompted to enter your Apple ID password (this sends the app to Apple to generate a free developer certificate for your device). Once the status shows "Success," unlock your iOS device. Step 3: Trusting the Certificate
Connect your iOS 9.3.5 device to your computer via a USB cable.