ipad 10.5 , iOS 11.3.1 JB 左無問題.
1. backup 左先用itune
2. 裝 TVOS11 beta profile
https://mega.nz/#!h7ISgTRB!85DI25AVuIqIyxQW0UA4F6AZ_c-KTty_-8yUb9RHjQM
3. 開 Airplane mode
4. 閂左Siri
5. passcode 閂左佢
6. reboot iphone
7. 裝個Electra thru Cydia impactor
8. 唔好插lightning 線
9. 行個Electra app, JB.
10. 有機會要行幾次, 最開頭. until 你見到寫住Already Jailbroken.
10. 如果唔見Cydia, SSH 入部電話, 輸入 "uicache" 就會出番黎.