The Yalu iOS 10 jailbreak, just like the iOS 9.3.3 jailbreak before it, is a semi-untethered jailbreak. This means you must re-sign the jailbreak app after 7 days with Cydia Impactor in order to keep your jailbreak app functioning after a reboot.

A new free jailbreak tweak called IconCert by iOS developer faz helps you keep better track of your Yalu app’s signing status so you can take the proper action to re-sign it accordingly.

[Update]: The tweak was removed from Cydia after it was conflicting with many tweaks. As of Thursday evening, the tweak has been reinstated into Cydia with the warning that IconCert doesn’t play nicely with jailbreak tweaks that modify or theme app icons on the Home screen. Please be wary of installing potential conflicting tweaks for the safety of your jailbreak!

Although one could just keep using their semi-untethered jailbreak beyond the expiration date as long as they didn’t reboot their device in the meantime, those who reboot more often or let their phones die are at the mercy of this style of jailbreak and need to pay more attention to their Yalu app signing status than others.

IconCert displays an indicator on the Yalu app icon that lets you know exactly how much longer you can go without signing your Yalu app with Cydia Impactor.

If this functionality sounds familiar, it’s because a jailbreak app called CertRemainTime could tell you how much time is remaining on your current signage. Of course, this requires having an additional app icon on your Home screen, so IconCert might be a better choice for many.

Depending on your circumstances, the app icon might display something like “7.00 d,” which indicates 7 more days, or something like “3.5 h,” which indicates 3.5 more hours. If you’re operating well beyond your Yalu app’s expiration period and haven’t rebooted your device lately, then it will say “expired” instead as you see in our example above.

Ending up in a scenario where you’re locked out of your jailbreak because you didn’t sign the Yalu app when you should have means you’re stuck without a jailbreak until you get back to a computer with Cydia Impactor (unless you’re using a tool like Extender Installer), so the goal of the tweak is to help train you to re-sign the app more frequently.

Since these semi-untethered jailbreaks have expiration dates on them, it’s always a good idea to stay information about when you need to re-sign the app with some kind of indicator, so this tweak is actually a great idea for most of the community.

IconCert is a release that I can’t recommend enough for most jailbreakers on iOS 10, so if you want to grab it for yourself, it’s available from Cydia’s BigBoss repository. The tweak doesn’t have any options to configure.

Do you like the idea of being able to see when your Yalu jailbreak app expires? Share in the comments section below.

  • David Gow

    Doesn’t certtime also do this and isn’t there also a tweak to resign Yalu without ever hooking up to a computer again

    • CertRemainTime works similarly, but not as clean as it requires another app icon on the Home screen. I think this tweak is a much better execution. To answer your second question – yes, but it’s not commonly adopted.

      • David Gow

        Cheers. And I enjoy the articles very much thanks again

      • Of course, thanks for staying tuned to iDB!

    • :D

      It’s called Extender: Reloaded

  • Blacklight: Retribution

    Come on 10.3.1/10.3.2 JB!

  • Diego Milano

    The unknown reasons are actually pretty known reasons: there were several reports of boot loops caused by it. Now the tweak is in beta phase with beta testers. Honestly, this is scary. I wouldn’t want to lose my jailbreak for such a tweak.

    • I’ve heard back from Optimo that an updated version of the tweak should be around soon enough. According to him, the boot loops were happening on devices with many tweaks installed on them, obviously a conflict of tweaks going on there. Since my test device has few tweaks installed on it, that would explain why I hadn’t seen these effects.

      • Diego Milano

        It’s back in the BigBoss now. The developer mentioned that tweaks that mess around with icon theming and such things may be the root cause, although I’ve seen pictures of people theming their icons and running normally.

      • That was fast! It may depend on certain jailbreak tweaks that modify the icons directly and not themes. I guess it makes sense since the tweak is technically modifying the Yalu icon to display this information, so modifying the icon twice over might confuse iOS and lead to the undesirable results.