A "no PC" jailbreak refers to a method where the exploitation and payload deployment occur entirely on the device via a mobile Safari-based attack vector. Unlike checkm8-based bootrom exploits (which require a USB connection and a computer), software-based jailbreaks for A7-A8X devices often rely on WebKit vulnerabilities to gain initial code execution, followed by a kernel exploit to disable code signing protections.
temporarily if the jailbreak app struggles to run the exploit. jailbreak ios 12.5.7 no pc