There is no permanent, direct untethered jailbreak for iOS 9.3.5 out of the box. The official tools available for this firmware are semi-tethered. However, advanced workarounds allow older 32-bit devices to achieve an untethered state via downgrading or secondary utilities. 🛠️ The Official iOS 9.3.5 Jailbreak Tools
If the direct method fails, using the traditional Phoenix app followed by installing the iocaste untether is highly reliable. ios 9.3.5 untethered jailbreak
Customization: Standard tweaks like WinterBoard and Cylinder allowed users to modernize the UI or embrace nostalgia. There is no permanent, direct untethered jailbreak for iOS 9