To use iFile, you need a jailbreak. On iOS 9.3.5, you have two primary options:

On your iOS device, go to Settings > General > Device Management and "Trust" the certificate associated with your Apple ID. Why use iFile on iOS 9.3.5 today?

By respecting the legacy method, you keep your device stable and secure. iFile on iOS 9.3.5 isn't just an app; it’s a time capsule that reminds us when we truly owned our iPhones. Keep that device alive, keep it jailbroken, and let iFile unlock its full potential.

made this version easily exploitable, iFile became a staple installation. It allowed owners of "obsolete" hardware to keep their devices useful, whether by manually sideloading apps or tweaking system performance to counteract the lag of older processors. Conclusion

Performance and stability