Tethered JBs are generally very rare so I wouldn ' t expect that . The additional exploit vectors available while tethered are quite few and generally better protected against exploiting . Actually a tethered JB would be awesome , as they generally mean the hole is present in the bootloader sometimes even the bootrom , fingers crossed but don ' t hold your breath and thus they allow for more advanced tweaks or even dual booting another iOS version andor custom OS like Linux . Perhaps a new wave of jailbreaks are born out of it allowing PSPlike CFW where we can literally expect to be running the latest iOS , jailbroken , within hours of release . The last part requires a modified kernel which can ' t be done without a bootloaderlevel exploit .