It does not modify the apps themselves, only how iOS validates them.
Out of the box, AWS AppSync is powerful. But when you try to manage multiple APIs or even a single non‑trivial API, things get messy: appsync unified repo repack
AppSync Unified alters core system files ( installd ). The official version is meticulously updated to support specific iOS versions safely. Repackaged versions often lack these precise compatibility checks. Installing an outdated or poorly modified repack can permanently crash your system, causing a bootloop that forces you to restore your device and lose your jailbreak. 3. Missing Critical Updates It does not modify the apps themselves, only
Reinstall the tweak from the official repo if possible, or reboot your device and re-jailbreak. or reboot your device and re-jailbreak.