Fix: Go to Settings → General → VPN & Device Management → Under "Enterprise App," tap your profile → Tap Trust.
You installed everything, but Facebook Lite crashes immediately. Here is the fixed diagnostic guide: Facebook Lite Ipa Download Fixed
| Error | Solution (The Fix) | | :--- | :--- | | "Untrusted Developer" | Go to Settings > General > Device Management. Find the profile and tap Trust. | | App opens then closes (Crash) | The certificate was revoked. Delete the app, turn on Airplane Mode, reinstall via Scarlet/Sideloadly, then turn WiFi back on. | | "Invalid IPA" | The file is corrupted. You need a freshly dumped IPA. We recommend version 388.0 or 393.0. Avoid auto-updaters. | | Login Loop | Uninstall the main Facebook app first. Facebook Lite conflicts with the main app’s token. | | "Unable to Download" on iOS 14 | You have low storage. The device reserves 1GB for verification. Delete old videos and try again. | Fix: Go to Settings → General → VPN
Disclaimer: This method involves using third-party signing tools (AltStore, Sideloadly, or Scarlet). You must trust the developer profile in Settings. We recommend using a secondary Facebook account for privacy, as sideloaded apps are not monitored by Apple. Find the profile and tap Trust