The "gold standard" for iPhone 7 jailbreaking is the exploit, which is hardware-based. Supported iOS Versions Palera1n iOS 15.0 – 15.8.7+ Semi-Tethered Mac / Linux / PC Dopamine iOS 15.0 – 15.8.3 Semi-Untethered On-Device (No PC required for re-jailbreak) Checkra1n iOS 12.0 – 14.8.1 Semi-Tethered Mac / Linux
As of 2020, there are no publicly available jailbreaks for iOS 10.3 or later, which means that if you've updated your iPhone 7 to a newer version of iOS, you may not be able to jailbreak it. jailbreaking iphone 7