kok3shi9 (also kok3shidoll) is a untethered jailbreak [note 1] for 64-bit devices running iOS 9.2 - 9.3. The Apple Wiki

Why does this matter? Because iOS 9.3.6 is the . After this, the iPhone 4s and the original iPad mini were relegated to the history books.

: For developers and security researchers, the jailbreak served as a playground to explore iOS's inner workings. It allowed for a deeper understanding of the operating system's vulnerabilities and strengths.

iOS 9.3.6 was released in July 2019 specifically to address a GPS time rollover issue affecting older hardware. It is the final supported firmware for the iPhone 4s and corresponding iPad models. Because these devices utilize the ARMv7 architecture, they are exempt from the hardware-based security mitigations introduced in later 64-bit devices (such as KPP - Kernel Patch Protection). This makes them prime candidates for permanent, untethered modifications.

kok3shi9 (also kok3shidoll) is a untethered jailbreak [note 1] for 64-bit devices running iOS 9.2 - 9.3. The Apple Wiki