iOS 9.3.5 uses (formerly MobileSubstrate). Many new tweaks assume Substitute (iOS 11+). If a modern tweak fails, look for a "Legacy" or "iOS 9" branch inside the UPD repos. The community repo ios935tweaks.github.io often hosts these forks.
Core Package: (Essential system files for jailbreak stability). ReJail Repo ( https://rejail.ru/ ) Cydia Repo Ios 9.3 5 UPD
Installing Cydia Repo on iOS 9.3.5 is a relatively straightforward process. However, it requires some technical expertise and caution. Here are the steps to follow: The community repo ios935tweaks
( https://cpdigitaldarkroom.com ): Hosts popular tweaks like HideMeX and Medusa , the latter of which brings modern Picture-in-Picture and Split View to unsupported 32-bit hardware. However, it requires some technical expertise and caution
Arguably the most crucial repo. It hosts AppSync Unified , essential for installing IPAs, and PreferenceLoader .
This tweak tricks the App Store into letting you download apps that technically require iOS 10 or 11 (though they may still crash if the hardware can't handle them).
: Community members continue to provide "fix" guides for Cydia on these older devices to resolve networking or certificate errors that naturally occur as the software ages. Essential Repositories & Sources