Iphone 7 Ios 15.7.3 Jailbreak Site
Palera1n is a bootrom exploit , meaning it bypasses SEP (Secure Enclave) restrictions partially. On iOS 15.7.3, you will have full filesystem access, tweak injection, and even passcode protection (though using a passcode with palera1n can cause issues with SEP, so many users disable passcode temporarily).
Turn off "Find My" and remove your passcode/Touch ID temporarily to prevent conflicts. Step-by-Step Guide using Palera1n iphone 7 ios 15.7.3 jailbreak