This step by step GreenPois0n guide and tutorial will show you how to jailbreak your iPhone 4.1 using GreenPois0n, the new jailbreak by Chronic Dev Team. This GreenPois0n guide will work for the iPhone 3GS, iPhone 4, iPad, iPod Touch 3G, and iPod Touch 4G.

GreenPois0n is is available for Windows, Mac, and Linux.

Although we encountered a few issues here and there, we were able to jailbreak our iPhone 4 successfully using greenpois0n. Once you get around a few hiccups, the process really isn’t all that difficult.

Check inside as we step through the jailbreak process with greenpois0n using a Windows machine. The steps are exactly the same no matter what platform you use.

Step 1: Download GreenPois0n and run it as an administrator.

Step 2: Power off your iPhone, and connect it to your PC.

Step 3: Walk through the steps to put your iPhone into DFU mode to prepare for jailbreak.

Step 4: Once you’re in DFU mode, click the ‘Jailbreak!’ button to jailbreak your iPhone.

Step 5: Now, just wait until the status bar shows complete, and your iPhone will reboot to the home screen.

Step 7: You should now have a new “Loader” icon on your springboard. Launch Loader. Select Cydia > Install Cydia.

Step 8: One Cydia has successfully been installed, you will be asked if you want to remove Loader. Hit “Remove” and your iPhone will automatically reboot.

Done! After your iPhone has rebooted, you will have a completely jailbroken iPhone with Cydia installed on your springboard.

Let us know how the process goes for you.

  • The Stranger

    I’m running 4.3 iOS and it says RC6 can jailbreak it. I get to the verbose and it reboots… UNJAILBROKEN. Can someone help me with this?

    • joe

      restore it to ios 4.2.1

  • Gabi

    Hi. My loader is not opening… What do I do?

  • Rachel

    My loader is not opening!

  • roy

    finaly it works 😀 😀 😀 blackrain and others dont work 🙁 green p0ison the best:D

  • R

    Everything works fine but it keeps saying not jailbroken 🙁

    WHAT DO I DO???!!!
    iPod 4g running 4.1

  • dale

    Hi. My loader is not opening!! help please

  • carlos

    HI My loader will not open

    • Domingo

      Hey my loader is not opening did anyone figure out how to fix this propblem or do I just start over or will that mess things up any help out there

  • Zz

    My loader is not opening! Help please!

  • yogo

    DONE!! just need to unlock it tho! but my baseband is not on the list!! wth..

  • keep getting try again timer not in syc with count not sure if its a dfu issue or if its cause i upgraded from 4.1 to 4.2.1 as suggested by another site im not sure im stuck.

  • Greenpoison fail

    greenpoison stopped for somme reason and now my ipod just have a black screen and won’t open again?!?! HEEEELP

  • Due to the network problem.. I try to that Network reset, After that My iPhone 3Gs got switched off automatically, But now not get switching on my iphone,
    Plz advice to me for activate my iphone

  • Zeh

    my loader its not opening, what do i do?

  • Viki

    I dont get the DFU mode working

  • Nic

    Did everything as said, iphone comes up with a black screen with tiny white writting.. can’t push any buttons.

  • Jon

    i’m running ubuntu 11 and cannot open greenpois0n executable. never have gone through so much trouble..

  • Issam

    i try to upgrade my i phone with i tunes it gives me error 1015 what can i do ?
    my i phone screen became black and have a logo of i tunes and usb help me pls.

  • I got a question, what happens if it says, “make sure that you’re connected to the internet” and don’t have wifi what should I do?

  • Anonymous

    i got a brick. A friend upgraded his phone and gave me his 3gs. i tried to jailbreak it so i can unlock it and use it with my carrier…not att. I downloaded and ran greenpoison. I followed the timed prompts for pushing the buttons and everytime it just says try again. And now the phone won’t even power-up. Have i ruined the phone? am i missing a driver or something since i’ve never had an apple product connected to my computer? please help

    • joe

      download itunes and do a full restore,your iphone is still in dfu mode

    • have u got itunes?

  • Emily

    My download is called 7zip, is that the same thing?

    • joe


  • Where is step 6? o.o

  • Zia

    guys pls help me out..i tried jailbreakng my iphone3gs wid GreenPoisOn but in the 1st attempt it said not able to jailbreak so i tried again bt nw my phone is stuck withd some programming sort of thing in ahich the last line says: “failed to get AppleS5L8920XARM7M after 0 sec.” and also “AppleBaseband: Could not find mux function”…
    pls help me coz my phn z nt respondng to nythng nw…m also nt able to switch it off….heeeeeellllllppppp…..