Don't Install If You're Jailbroken
If you're using a jailbroken iPhone or iPad or if you're simply looking to jailbreak your device, avoid the iOS 11 beta.
Jailbreak developers have teased an iOS 11 beta jailbreak and it's unclear if one is in the cards for early version of iOS 11. Nothing is confirmed but we'd put a lot of money on developers waiting for the official iOS 11 release in the fall.
If you want to jailbreak your iPhone or iPad you need to be on an older version of iOS 10 or Apple's iOS 9 operating system. Unfortunately, there's no way to downgrade to anything older than iOS 10.3.3.
Jailbreak developers have also teased an iOS 10.3.1 and iOS 10.3.2 jailbreaks but a public release hasn't taken place yet and it's unclear if a tool will be released to the general public.