Use a computer with Sideloadly or AltStore to install the Phoenix.ipa file.
www.reddit.com/r/LegacyJailbreak/comments/1s4qjp8/a_new_fully_untethered_jailbreak_for_ios_935_to/.
A jailbreak requires you to connect your device to a computer and run a tool every time it reboots, or else it will not boot at all. A semi-untethered jailbreak allows your device to boot on its own after a reboot, but all jailbreak-related modifications and tweaks will be disabled until you manually re-run the jailbreak application on the device itself. An untethered jailbreak, by contrast, is the holy grail: once installed, the device remains fully jailbroken even after being powered off and turned back on, with no need to reconnect to a computer or manually trigger anything. ios 9.3.5 untethered jailbreak
The jailbreak was made possible by a vulnerability in the iOS kernel, which allowed the hackers to create a tool that could exploit the vulnerability and gain root access to the device. The tool, known as "H3lix," was released as a semi-untethered jailbreak, meaning that the device would reboot normally, but the jailbreak would remain in place.
Historically, iOS 9.3.5 was the final update for many legacy devices, including the iPhone 4s , iPad 2 , iPad 3 , and iPod Touch 5 . Use a computer with Sideloadly or AltStore to
While jailbreaking has become much safer with modern open‑source tools, there are still important risks to consider.
The breakthrough for iOS 9.3.5 relied on a series of critical vulnerabilities, most notably the Trident exploits. These were a set of three zero-day vulnerabilities originally discovered being used in the wild for targeted surveillance. The exploits targeted the kernel and Safari's WebKit engine, allowing for arbitrary code execution. Developers repurposed these high-level security flaws to bypass Apple’s "Code Signing" and "Root" protections, giving users full control over the file system. The Impact on Legacy Hardware A semi-untethered jailbreak allows your device to boot
Plug your iPhone or iPad into your computer.
If you experience a reboot loop, force restart the device (Hold Power + Home).
