For those of you clamoring for an untethered jailbreak for iOS 5, you’ve now got a great compromise to hold you over — SemiTether.

As we reported, SemiTether is a new jailbreak tweak that will allow you to get closest to an iOS 5 untethered jailbreak without actually being an untethered jailbreak.

Inside, we’ll show you exactly what you need to do to take advantage of this remarkable little tool. If your iOS 5 installation is jailbroken, you don’t want to miss this!

Step 1: First, you have to jailbreak your iOS 5 device. The best way to do so is with RedSn0w. Follow our iOS 5 RedSn0w video tutorial to learn how to do this.

Step 2: Install SemiTether by following the video tutorial below:

The Cydia Source is:

Why SemiTether is So Useful

First and foremost, check out this post to see the differences between an untethered, semitethered, and tethered jailbreak.

Since the iOS 5 jailbreak has been tethered thus far, you need to perform a tethered boot every time you reboot your jailbroken device for any reason; otherwise, the iPhone or iPod touch would infinitely reboot and show the Apple logo. This wouldn’t be a problem, except for the fact that a tethered boot requires you to be near your computer in order to do so. So, if you are away from your home or office, your iPhone would be completely inoperable until you got back home, or near a computer with RedSn0w.

What SemiTether does, is remove the need to perform a tether boot to reboot. Now you can freely reboot your phone, even when you are away from the computer.

It doesn’t come without a few caveats though, hence the name, SemiTether. While you can freely reboot, you can’t access your jailbreak apps or tweaks that you have installed; you can’t use Safari, or web browse, and you reportedly can’t use Mail. This is only temporary, as all of the normal functionality is restored upon doing a tethered boot.

The good news is that you can text and use SMS. You can also use all of your other stock iPhone apps. This is much better than the alternative, which didn’t allow you to do anything! Before SemiTether, you couldn’t even boot your jailbroken iOS 5 installation without being near a computer.

We hope that SemiTether will be able to tide your over until real untethered jailbreak appears for iOS 5. We think a lot of your will appreciate this middle ground of sorts until then. Won’t you?

Note: For those experiencing boot loop issues, and constant resprings, there can be many reasons why this happens. One reason is you enabled a notification center jailbreak widget, when your iPhone is booted in Semi Tether mode. To fix this, boot tethered using RedSn0w.


    this is fantastic its a get me home solution,,at least i can swith on my phone and make calls and texts until i get hom and boot it again

  • wolf

    Ich konnte es noch nicht testen, installiert die semitether .deb mal vom PC aus mit iPhone pc-Suite, ich denke damit könnte man die Sperre umgehen. Ansonsten müsste man sich mal die Befehlszeile in der deb ansehen (mit winrar öffnen) und gegebenen falls den Befehl entfernen.
    Es wurde ja voraus gesagt, dass etwas kommen soll, was Appsync unmöglich machen soll, es stellt sich nun die Frage in wie. Weit nun Absprachen von Apple mit den Devs bestehen (einer arbeitet dort) Apple wollte bereits seit längerem darüber nachdenken das System freier zu machen.

  • Jeff

    I have a question-so I tried to jailbreak my iPad 1 after upgrading from 4.31 to 5.0. I followed the directions on jailbreaking with redsnow the last version, but when it was completed, the white Cydia icon was present and it won’t let me press it, it just flashes like its going to open but it doesn’t please help me out thanks

    • David

      Its because u need to boot tether it

  • Ian mc kenna

    Hi Jeff just go to redsnow and just boot tearthed and when phone comes back on Cyrus will be back to normal

  • Ian mc kenna

    Hi Jeff just go to redsnow and just boot tearthed and when phone comes back on cydia will be back to normal

  • hakkan

    After semi-tethered my Ipad, it deleted Installous and I could NOT install it again !

    Suggestion please…

  • Ian mc kenna

    Mine disappeared to but installed appcake and then went back and Cydia let me install Installous

  • Ian mc kenna

    Mine disappeared to ,but I installed appcake and then went back and Cydia let me install Installous


    hi guys i try the steps but i cant install the installous ….when i try to install installous it ask me to remove semiTether 🙁 WTF???

  • Saud

    Why would I semi tether my ophone if Cydia isn’t going to work?! I don’t get the point!!!

  • retrace

    The guys who released thie SEMITETHER should have seen by now that many users reported it does not work for any iPhone. It’s like it’s not even installed. The phone freezes at Apple Logo. Once SEMITETHER is installed – it uninstalls: INSTALLOUS, and also another programs form CYDIA stop working: eg: DIRECT CLOSER PRO. So the question is why it doesn’t work an all iPhones ? I have iPhone 4 with iOS 5.

  • Noel

    After impatiently waiting for the untethered jailbreak before updating my iPhone 4 to iOS, I finally gave in and did it when the semitether was released. I’m totally fine with the lack of functionality as long as I can still use my phone and stuff until I can get home to boot with my computer.

    I thought everything went fine and dandy – I upgraded the iOS, did the jailbreak with the latest version of redsnow, installed the semitether app, and reinstalled just a few Cydia apps (nothing illegal – i’m not into that) and was pleased by how smoothly it was going. I had to respring a few times, but no reboots were necessary. Until one was, this afternoon. I rebooted, and surprise surprise, despite everything running nicely and semitether being installed with no problems, I got stuck on the Apple screen. Apparently I was never semitethered, I guess? I’ve tried rebooting several more times, removing and reinstalling semitether, and the same thing happened. Now, my iPhone is happily running on the tethered jailbreak, but it just makes me nervous to be possibly caught somewhere and not be able to make calls.

    Any suggestions as to why this wouldn’t be working? I’d like to avoid doing a restore because it took me a ridiculous amount of time to install the iOS and upload and arrange all of my apps and icons. So if anyone has anything suggestions of things to try before I go that route, I’d really appreciate it. Thanks so much!

  • Dan

    Once I installed this crap I wasn’t able to respring anymore, so it kind of defeated the point (respring would freeze). I had to re-install mobile substrate and remove the semi tether for everything to get back to normal. I’ll just wait for untethered.

  • Noel

    I finally solved my problem with getting stuck on the Apple logo by removing MyWi. I read elsewhere that someone else had issues with it while using semitether, but I didn’t want to believe it. PDAnet will have to work for me until this gets fixed.

  • djbix

    ahh good news guys whe u do this you wont be able to use safari. but jja jja if u download google app u can use the web..