This is the single biggest reason to stay on an iPhone 7 rather than upgrading to an iPhone 8 or X.
: A powerful tool based on the checkm8 exploit. It offers both rootless and rootful modes, though rootless is recommended for better compatibility. iphone 7 ios 15.7.3 jailbreak
Your best and only future-proof method is . It will continue to work as long as you keep your iPhone 7. This is the single biggest reason to stay