Greenpoison RC5 4.2.1 Unthetered Jailbreak is Out | Tutorial and Download

Cosmin Coman on February 3, 2011 with 159 Comments
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Greenpoison RC5 is finally out. It brings unthetered jailbreak for iOS 4.2.1 for almost all IDevices, without the need of SHSH blobs or any other requirement. All you have to do is install 4.2.1 and jailbreak it with Greenpoison RC5 4.2.1 unthetered Jailbreak.

Supported iDevices:

  • iPhone 3GS
  • iPhone 4
  • iPad
  • iPod Touch 2G
  • iPod Touch 3G
  • iPod Touch 4G

Warning: If you own an iPhone 4 and you need a carrier unlock stay away from Greenpoison rc5, because it will upgrade your baseband, making your device impossible to unlock.

Follow the tutorial below to Jailbreak your iPhone, iPad or iPod Touch using Greenpoison RC5 4.2.1 Unthetered Jailbreak

Step 1: Download Greenpoison RC5 [ Links Below]

Step 2: Connect your iPhone, iPad or iPod Touch to your computer, run Greenpoison RC5 and click on “Jailbreak”

Step 3: Follow the instructions prompted to you by Greenpoison RC5 to enter DFU mode

Step 4: Greenpoison RC5 will now start Jailbreaking Unthetered your iPhone, iPad pr iPod Touch running iOS 4.2.1

Step 5 : Once Greenpoison RC5 finishes, your iPhone, iPad or iPod Touch will reboot and you should see and icon named “Loader”

Step 6: Tap on Loader, install Cydia and you’re done!

You have successfully jailbroken unthetered your iPhone, iPad or iPod Touch using Greenpoison RC5 for iOS 4.2.1

Enjoy!

Download Greenpoison RC5 for Mac and Windows

Download iOS 4.2.1 for your iDevice here

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about the author

Cosmin is a smartphone enthusiast that writes articles for our iPhone and Windows Phone 7 departments and he provides the latest jailbreaks and unlocks releases as well as hot news about Apple or Microsoft. His best friend is his iPhone 4 and he is always comparing smartphones with Adu.

Discussion 159 Comments

  1. Maarten van den Berg February 4, 2011 at 5:02 AM

    I have problems with loading Cydia. Sometimes it doesn't show in loader and when it does and I try to install it I get the following error message: nsurlerrordomain error -1100Any help?

    • bionda February 5, 2011 at 1:07 AM

      after jailbroken iDevice with green poison rc5, you run redsnow 0.9.7bx and istall Cydia with redsnow...and enjoy... Omizio team ;-))) B

      • pete February 11, 2011 at 10:33 PM

        i tried to do it on windows and it doesnt do anything, adding redsnow on top of green poison only works with macany help for windows

  2. Charlie February 4, 2011 at 10:25 AM

    Hey Coman, same charlie here - thanks very much. managed to jailbreak with greenpoison, but am unable to download "cydia" of the "loader" app (loader just shows an empty window). is this cydia essential, or are there other ways of installing it?

    • Cosmin Coman February 5, 2011 at 6:48 AM

      someone replied to your question

  3. Scott February 5, 2011 at 3:28 PM

    Hey, when i click on windows on greenposi0n, it tells me my link is broken. Help!!!

    • Cosmin Coman February 5, 2011 at 5:12 PM

      Download link for windows will be up in a couple of days. Stay tuned untill then

    • Chaset February 6, 2011 at 12:14 AM

      The website's having problems. I found the link to the windows version in the source http://cache.greenpois0n.com/dl/gp_win_rc5_b2.zip

  4. Mark February 6, 2011 at 1:47 AM

    Goes greenpoison update the baseband to IPad baseband? I have an iPhone 3GS, only 2 months old and don't need to unlock it and I don't want to change my baseband. Does this work for New bootrom too? And can I use it on my Touch 2G MC model?

  5. John February 7, 2011 at 11:56 AM

    Thanks for the tut! Worked great.I had the tethered JB already on it - just rant the GreenPoison exe and it worked great without losing any data or having to reinstall Cydia.Again, thanks for posting!

  6. risse February 8, 2011 at 8:11 AM

    hi i tried using greenpoison with my itouch 2nd gen mc model. but it doesnt work.it says i dont have enough memory. but i already formatted my itouch.

  7. Matty February 8, 2011 at 11:40 AM

    My iPod is just like LOL i can get free apps now woohoo :]]]

  8. Sagar Waghela February 8, 2011 at 12:26 PM

    I Have iphone 3GS tethered jailbreak with baseband 06.15.00 can I run greenpoison on it

  9. Mark guzman February 8, 2011 at 8:36 PM

    It won't let me update my apps now via app store

  10. kevin February 8, 2011 at 8:47 PM

    didnt work for me for hours then i watched youtube and they put it in dfu a different way then described.worked like a charmps koi1??? cant remeber the numbers but on youtube try it his way

  11. mbako February 9, 2011 at 6:30 AM

    would this jailbreak work for iphone 3g running 4.2.1? are there any other untethered jailbreaks out there for the iphone 3g?

  12. swamy February 11, 2011 at 2:15 PM

    I have an inactive(not activated through itunes) iphone, the screen still shows emergency call. how to activate it, i don't know which network it belongs so don't have the right seem. I tried green poison and now the boot screen has the green poison logo but still phone is not activated.Please help.

  13. skittles February 12, 2011 at 7:48 AM

    i need help to carrier unlock my iphone 4 can some one please help me

  14. Jake Lamb February 12, 2011 at 4:04 PM

    I am having some trouble to installing GP on my iPhone 4 from my mac. Everything works like its supposed to except for after I put my phone int DFU mode, and GP goes through its normal jailbreak routine and says "Complete", my phone's screen turns white for a moment and the logs appear. The problem (so I think) is that only about 4 logs appear saying that disk mount and un-mout could not be found. help?all my software is up to date..

  15. me February 12, 2011 at 11:47 PM

    work great thanks so much

  16. Leong February 13, 2011 at 12:00 AM

    My app store went missing after i jailbroke my iphone4 , how can i get it back?

    • ToniDaTyga February 13, 2011 at 5:51 PM

      Me too! My app store is accessible but when I go to install it crashes.

    • ToniDaTyga February 15, 2011 at 5:26 PM

      I figured out how to fix App store crashing after jailbreak for Iphone 4. If you are using the jailbroke app "Categories"and hide your App store icon, it will crash. Also, if you are using "Installous" and have a cracked app downloaded (but not installed), it will not load the app store version. Also, if "Installous" is running in the background, the App store will not be able to connect. If it applies to you, try those fixes.

      • Cosmin Coman February 16, 2011 at 5:15 AM

        Thanks for helping the comunity!

      • Leong February 18, 2011 at 11:42 PM

        sorry, how do I fixed them ? do you have specific steps to guide me? thank a lot

      • ToniDaTyga February 20, 2011 at 9:26 PM

        There aren't any specific steps. If you have the Cydia app Categories make sure the App store is not hidden in one of the folders you created. It needs to stay on your springboard. Also, if you have the Hackulos app Installous, it cannot be running in the background if you are trying to load up the App store. On the Iphone 4, it has multi-tasking and you have to press the home button twice to see what's running. If Installous is down there, hold the icon until it vibrates and delete. Then load up the App store. This is for IOS 4.2.1.

  17. Martin February 14, 2011 at 5:02 AM

    My App Store went missing after Green Pois0n update too. Any ideas how to get this back please. I have tried Reset Home Page and checked the Restrictions. Cheers

  18. ed February 14, 2011 at 7:03 AM

    why i can't jailbreak my iphone 3gs 4.2.1 using green poison in my window 7?i keep trying but it always failed.what should i do?need help..

    • Cosmin Coman February 15, 2011 at 2:29 AM

      There must be something wrong with your windows. Try running greenpoison as administrator. If that doesn't work either, ask a friend to let you use his PC

      • ed February 15, 2011 at 7:00 AM

        Thanks !!!!

  19. deepa February 15, 2011 at 11:04 AM

    hi,Thanks I managed to jailbreak by 3gs with ios 4.2.1. Could you please let me know which software will help me unlock the phone. I would be using the phone outside of US.

  20. Anita February 15, 2011 at 2:58 PM

    Hi there. I have a question. I have an Iphone 3gs jailbroken with limerain on 4.1. If I wanted to update my phone to 4.2.1, can I also jailbreak again with Greenpoison? Please help.

    • Cosmin Coman February 16, 2011 at 5:16 AM

      Of course

      • Anita February 16, 2011 at 8:32 AM

        Thank you. I appreciate your feedback. :D I do have another question. When I plugged my Iphone into my computer and when Itunes popped up, it said that a new update, 4.2 was available. Is this the same update as 4.2.1? Or, will 4.2.1 show up as a separate install after I install 4.2? Thank you again!

  21. John February 17, 2011 at 3:51 AM

    Please help me! I did exactly what it said. Held the buttons down for the right time and all! But now my iPod Touch is on, the loader app doesn't appear :( What do I do!? D:

    • Cosmin Coman February 18, 2011 at 10:40 AM

      Was the jailbreak process complete?

      • Aaris February 20, 2011 at 1:21 AM

        Yes

  22. Brandon February 17, 2011 at 6:10 PM

    Springboard continues to crash and my ipod lags a lot. Trying Multitasking always crashes springboard. HELP please.

    • Harold February 24, 2011 at 6:38 PM

      Same problem here. When I double click for switcher it seems to have a bit of lag to it. Springboard has crashed four times today alone. I've also had the phone crash when I went to answer a call. Can anybody help? I JB'd a fresh 4.2.1 iTunes restore with GP rc6(newest from website). Before the restore with iTunes it was 4.0.1 JB'd with jailbreakme.com if that helps.

      • Cosmin Coman February 26, 2011 at 10:52 AM

        what iPhone do you have?

      • Harold February 26, 2011 at 11:02 AM

        IPhone 3GS. ALSO NO VVM AND MY SHIFT KEY STICKS SRRY

      • Jordan March 8, 2011 at 5:27 AM

        I have the same problem. Springboard crashes after many functions ( to many/ to often ) . I love the freedom but I'm debating on weather I should restore it back to factory settings. Seems so unreliable .... Unless of course the fault lies with me. Any suggestions? iPhone 4 iOS 4.2.1

  23. frank February 18, 2011 at 12:26 AM

    i just reasantly jail broke my iphone i was wondering how i am gonna get music now can i still hook up my iphone 3gs to itunes and it will still be jail broken?

    • Cosmin Coman February 18, 2011 at 10:28 AM

      Of course you can

  24. muslim February 18, 2011 at 9:28 AM

    cydia is not opening i try to open it n within half a second it shuts down

  25. Myself February 18, 2011 at 2:36 PM

    I installed this and now i cant use my twitter apps and have safari problemsMy touch.facebook doesnt work properlyCan anyone help?

  26. Jvy February 19, 2011 at 8:42 PM

    My app store went missing after jailbreaking, is there anyways to get it back? And after downloading apps from installous, am i still able to restore my iphone to the non-jailbreak one?

    • Cosmin Coman February 20, 2011 at 3:27 AM

      Of course. You just have to restore iOS 4.2.1 via iTunes

  27. ty February 20, 2011 at 5:12 PM

    i downloaded greenpois0n and successfully jail broke my iphone4 i downloaded cydia but it crashes when i try to open it, anything i can do

  28. B.Cherry February 21, 2011 at 5:48 PM

    Safari crashes (becomes unresponsive) after iOS 4.2.1 Jailbreak when watch an HTML 5 video. Is there a fix for this?

    • Cosmin Coman February 22, 2011 at 2:23 AM

      i'll check into that and get back to you asap

  29. terry February 24, 2011 at 3:56 AM

    hi, can GP jailbreak iphone 3g on 4.2? been tryin for ages but kept saying try again

    • Cosmin Coman February 24, 2011 at 6:21 AM

      Run it as Administrator if you are using Windows 7

  30. andrew February 25, 2011 at 12:38 AM

    Doesnt work for me even running as administrator. have been trying for so many times.

    • Cosmin Coman February 26, 2011 at 10:48 AM

      try asking a friend to let you use his computer

  31. Sean February 25, 2011 at 9:56 AM

    I have downloaded and now jailbroken my iPhone 3GS running on 4.2.1 and also installed cydia. On my previos jailbreak I had to install hackulous and installous to get free apps, how do I do that now as my search won't allow me to find either of them any more, any help is appreciated

    • Cosmin Coman February 26, 2011 at 10:47 AM

      You need to install the apropriate sources into cydia.

      • Sean February 26, 2011 at 1:43 PM

        I know that but they don't appear on cydia anymore so have they changed. I mean it won't find hackulous at all nor will it find installous. Help please

      • Cosmin Coman February 26, 2011 at 2:42 PM

        that can't be. I have hackulous on my iPhone... I'll check into that

      • Sean February 27, 2011 at 11:32 AM

        Thankyou, I have checked again and it just doesn't seem to be there at all honestly. When I search for hackulous or installous through cydia they just aren't there

      • Sean February 27, 2011 at 2:05 PM

        Sorry to waste your time mate. I forgot you don't search it at all you add it to the sources for cydia dont you by addin http://cydia.hackulo.us and then adding installous. Sorry to trouble you mate and thanks for the quick response lol

      • Cosmin Coman February 28, 2011 at 5:26 AM

        Well, i didn't understand what was your problem. I thought that you were unable to add sources. I'm glad you solved that out

    • kelly March 19, 2011 at 9:48 AM

      i referred to your replied msg "I forgot you don't search it at all you add it to the sources for cydia dont you by addin http://cydia.hackulo.us and then adding installous."how do i add? under sections in cydia or cydia home? appreciate your piece of advice.

      • Cosmin Coman March 19, 2011 at 3:48 PM

        Manage>sources > edit...

  32. Pat February 26, 2011 at 12:34 AM

    Hello I have an iPhone 4. I jail broke my phone with limerain several months ago. Yesterday I updated my phone to 4.2.1. I downloaded greenpois0n to jailbreak my phone again and it keeps telling my the try "failed". What's going on ? Is there something I can do. Thxs Pat

    • Cosmin Coman February 26, 2011 at 10:45 AM

      Try running greenpoison as administrator

      • Pat February 26, 2011 at 10:53 AM

        How do I do that ?

      • Cosmin Coman February 26, 2011 at 2:38 PM

        right click on greenpoison and "run as administrator"

  33. Pat February 26, 2011 at 2:57 PM

    Ok. Let me know. Thank you very much your help. Pat

  34. Bruce February 26, 2011 at 3:16 PM

    I am having some trouble to installing GP on my iPhone 4 from my mac. Everything works like its supposed to except for after I put my phone int DFU mode, and GP goes through its normal jailbreak routine and says "Complete", my phone's screen turns white for a moment and the logs appear. The problem (so I think) is that only about 4 logs appear saying that disk mount and un-mout could not be found. help? all my software is up to date..Same problem here!!!!!

  35. Tom February 28, 2011 at 12:49 AM

    I'm using a 3gs phone. I have jailbreak my phone but my cydia app doesn't comes out and when i go to the loader and try to install it again, it just prompt me error: cydia have already been installed. How should i deal with it. Thanks

    • Cosmin Coman February 28, 2011 at 5:27 AM

      Are you hiding your springboard apps? Because it seems there is a problem with Cydia when you are hiding certain apps

  36. AA February 28, 2011 at 8:26 AM

    Hi all!Any idea for jb a 3G with 4.2.1?

  37. Liam March 1, 2011 at 1:49 AM

    Hi I have 3rd gen iPod touch on 4.2.1 software and I recently jailbroke with latest greenpois0n. I went into loader and installed cydia, and after rebooting my iPod I clicked on cydia but it only opens for like half a second before crashing. I have tried rebooting my iPod, going into loader and trying to install it again, but it just says error: cydia already installed. What do I do?

    • Cosmin Coman March 1, 2011 at 1:57 AM

      Install Cydia using Redsnow. That will fix your problem

      • Liam March 1, 2011 at 2:19 AM

        Sorry for being a nooband all but how and with what version?

      • Cosmin Coman March 4, 2011 at 2:23 AM

        You can try the latest version of Redsnow 0.9.6. Just search 2-soft

  38. k March 1, 2011 at 2:56 PM

    Greenpois0n is CRAP!!! I've been jailbreaking my iphone since the 3g(I am now on an iphone 4) and have NEVER seen as many issues with a jailbreak. Crash & freezes 5 times a day forcing me to do a 10 minute reboot just to function. The fact is: GP is buggy!!!

    • Cosmin Coman March 4, 2011 at 2:20 AM

      Search for updated versions on 2-soft. They should fix a lot of bugs.

  39. Hughba March 2, 2011 at 11:36 PM

    After jail-breaking my iPhone 4 4.2.1 it got rid of my app store camera and calculator please help me. I'm goin crazy here.

  40. zoom March 3, 2011 at 1:24 AM

    hello i jb my 3gs with gp, but some official apps such as app store, camera, compass, contacts, and calc disappeared. somebody told me its because my phone memory was almost full. (it had 4gb left when i jb) now that i have cleared for more memory space, how do i get the missing apps back? do advice, thanks!

    • Cosmin Coman March 4, 2011 at 2:17 AM

      Do you have any cydia app that hides springboard apps?

      • Zoom March 4, 2011 at 10:36 PM

        I'm not sure, how to I check?

  41. dave March 4, 2011 at 6:43 PM

    well i jailbroke my new iphone 4 about a week ago which i found really easy to do and i have no pc expertise at all and what do i think atm AWESOME ive had no freezing no rebooting cydia works perfectly all my apps from the app store still work and update 1 thing i did find jailbreaking it that it wouldnt work while i was using internet explorer but did let me on google chrome so lil tip that may help some people the thing im wondering itunes is telling me to update safari can i ???? what updates can i do and what updates cant i do cld really use some extra knowledge on this please :)

  42. deux March 6, 2011 at 5:59 AM

    hello i jb my itouch 4g via greenpoison and already downloaded cydia..but when i click the cydia icon it would not open...??? what will i do to open it?

    • Cosmin Coman March 7, 2011 at 2:51 PM

      reinstall cydia using redsnow

  43. MIna March 7, 2011 at 12:04 PM

    I jailbroke my ipod4G with Greenpoison and now the loader app wont even open, How do I get cydia?i tried downloading redsnow like 10 times and all the sites i tried have some error!

    • Cosmin Coman March 7, 2011 at 2:45 PM

      get redsnow 0.9.6b4 from 2-soft

  44. scott March 7, 2011 at 4:16 PM

    my apps will not download from installous ,, please help, keeps coming up with error ?

    • Cosmin Coman March 8, 2011 at 12:48 AM

      Allways use Cydia instead of Installous

  45. shamnad March 8, 2011 at 2:22 AM

    after jail breaking any of the carrier is not working in my 3g.what would i do.

    • Cosmin Coman March 9, 2011 at 12:20 AM

      you need to perform a carrier unlock with ultrasnow

  46. ilkka March 8, 2011 at 8:30 AM

    when i remove all files and softare from my iphone 3gs and when try to open again its stuck with a skull and tilt. how i get it open again? its not respons itunes..

  47. asia tanee March 8, 2011 at 11:26 AM

    OMG OMG OMGGGG i think i just jailbroke my phone, this the first time i ever attemped anything like this im sooooo happy it worked. first time like a charm :) thank you sooo much chronic dev team and everyone responsible for this jailbreak and all your hard work! now what should i do ?

    • Cosmin Coman March 8, 2011 at 11:43 AM

      :)) Start installing jailbreak apps

  48. Azharudin March 8, 2011 at 10:26 PM

    than you very much man i jailbrek my ipod 2g 4.2.1

  49. InderpalB March 9, 2011 at 12:40 AM

    Umm.. my friend was jailbreaking my ipod for me and when i got it back it had loader ready. The only but main problem is that when i tried to open Cydia after installing it but it kept on closing right after a split second. I really want this jailbreak so what should my friend do to help me in this case.

    • Cosmin Coman March 9, 2011 at 1:39 AM

      Thy adding Cydia with Redsnow 0.9.6

  50. Daniel March 9, 2011 at 7:45 AM

    Tried about 10 times. Doesn't work. Running Win7, 64bit and ran the exe in administrator mode. What am I missing?FYI, I don't have iTunes installed on this computer. iTunes is garbage.

    • Daniel March 9, 2011 at 11:35 AM

      Tried it on a Mac and it worked. It required the iPod to be ON before starting. The PC directions say to start with the device OFF. Tried it off on the Mac and it failed. Tried it again on the Mac with it on and it worked. Great! Umm, now what? ;]

  51. alexis March 10, 2011 at 3:44 PM

    HELP ASAP! guys please please answer and tell me what u know. i have 6.15 baseband..4.2.1 firmware its jailbroken adn unlcoked..i just bought itbut it keeps crashing! like turning off, randomly at different things i do. and when it shuts off it says it isnt charged! and i have to sit and wait for it to charge or turn on even thought its fully charged. it does this alot..should i restore to 4.3? what should i do? i tried rejailbreaking it..idk. idk how the guy i bought it from jailbroke it but its greenpoison. i jailbroke my last iphone 3gs and it didnt crash all the time. what to do!

    • Cosmin Coman March 10, 2011 at 3:53 PM

      try installing whited00r, it works better on iPhone 3G. you'll like it

      • alexis March 10, 2011 at 3:59 PM

        i have iphone 3gs..just got it yesterday tho so whoever jailbroke idk what or how they did it but it crashes every 20 mins..randomly ..like ican click on different things and swear its working fo rgood but stops and then i have to leave it on the charger for like 20 mins till it starts. thats sooo annoying. when i jailbroke my last iphone 3gs w/ greenpoison.com it worked fine..[someone stole my phone]..so idk why this one crashes..it has the little skull start up animation too btw. just tryna give u as much info..i have openssh too so i can take things out..i just need to figure out how to stop it from crashing period. what should i do b4 i have to return it..whats whitdoor? how do i get and do it..thanksss so much:)

  52. alexis March 10, 2011 at 4:17 PM

    can anyone help me? ..6.15 baseband..4.2.1 firmware..greenpoison im guessing bc of the skull start up animation..yet it crashes alot..or cuts off and has to be put on the charger..even though its fully charged..should i restore to 4.3? will that DEF stop it..then i can just wait for that jailbreak..or will restoring it not help? i will restore it if it will def go away. what else can i do? someone please help..i only have day to decide if ima keep it.

    • Cosmin Coman March 11, 2011 at 12:05 AM

      you can't restore to 4.3. iPhone 3G is not supported

  53. Androidbrains March 11, 2011 at 12:48 AM

    Hi, i followed the instructions above for a 3G Itouch running 4.2.1. After doing it all, when i click on Cydia, it says "Initialising File System (Cydia will exit when complete)" and then it takes the Itouch back to the "slide to unlock" page. I can't get any further. Any ideas?

  54. krrish March 11, 2011 at 3:12 AM

    hi,my Itouch is running on ios 4.2.1 (3G) .After jailbreaking ,when i try to install cydia ,it says " your device is running out of disc space " and it asks the permission to dismiss the process although it's almost empty (8GB ) . I repeated this whole process and again same problem..Any idea how to resolve this problem ? plz guys help me out..thx in advance

    • Cosmin Coman March 11, 2011 at 3:40 AM

      you can try adding Cydia using Redsnow 0.9.6

      • krrish March 11, 2011 at 7:41 AM

        thx for your reply. I tried using redsn0w 0.9.6b4 coz I'm a windows user but the process hangs in between. Is there another way out ?

      • Cosmin Coman March 11, 2011 at 8:15 AM

        maby there's something wrong with your windows. Run GP or Redsnow as administrator, if that doesn't work, ask a friend to let you use his computer

  55. Gary Sheehan March 12, 2011 at 9:09 AM

    Hi, i unlocked my iphone 3G using Redsn0w & checked the Cydia & ipad baseband boxes & installed ultrasn0w when the phoned re-booted. Now a friend said i could install Greenpis0n over the top of redsn0w for which now i know that Greenpsi0n wasnt built for the 3G models. So i ran the greenpis0n over the top not knowing the above comment before hand. Now the phone is stuck in the recovery mode & ive tried Sn0wbreeze & tinyumbrella but the phone is still stuck. Any ideas please.

    • Cosmin Coman March 13, 2011 at 1:42 AM

      well, your only option now is to try whited00r. Try installing that and get back to me with the results

  56. Jake March 14, 2011 at 1:19 PM

    Just wondering before I JB, does greenpois0n have enable multitasking and homescreen wallpaper like redsn0w?

  57. Brandon March 14, 2011 at 8:34 PM

    i jailbroke my ipod using greenpois0n 4.2.1 and whenever i try to play a game i got from the app store it loads for a second they goes back to the home screen how do i fix that?!?

    • Cosmin Coman March 15, 2011 at 1:13 AM

      did you install appsync? Somethimes AppSync does that

  58. Randy Lezak March 15, 2011 at 9:37 AM

    Hi,Im not too sure what can I do with my Spirit jailbroken 3Gs. Im on 05.12.01 still running the 3.1.3 version. I rely on the unlock I have. What is my next step, can someone help please.

    • Cosmin Coman March 15, 2011 at 10:48 AM

      i suggest keeping 3.1.3 on 3g or try whited00r.

  59. firby March 15, 2011 at 9:26 PM

    jailbroke iphone 4 on 4.2.1 wit gp but it erased my app ap, camera, and contacts. what do u recomend. the r not hiddden or restricted????

    • Cosmin Coman March 16, 2011 at 2:09 AM

      i'll check into that issue and get back to you asap

  60. Sorin March 16, 2011 at 5:00 AM

    hi there. I have a ipod touch mc 2nd gen with a bit of an issue. after using greenpois0n on it and running the loader it gives me an error message saying there is no more space. it's 4.2.1

    • Cosmin Coman March 16, 2011 at 4:00 PM

      try installing Cydia with redsnow 0.9.6

      • Sorin March 17, 2011 at 1:39 AM

        redsn0w does not support mc version 4.2.1 but as usual i managed to fix it from another computer. thank you for the reply :)

  61. hunter March 16, 2011 at 4:11 PM

    i jailbroke my iphone with redsn0w and then i just installed greenposi0n over it and its stuck on the black screen with all the writing what do i do?? help please

    • Cosmin Coman March 17, 2011 at 5:37 AM

      what iphone? is it supported by greenpoison?

  62. Teck Noid March 17, 2011 at 8:48 AM

    What Happens If I Turned Off MY Ipod Touch 4 ios 4.2.1 will i had green Pois0n will it Breack Plz I Need Help Fast

    • Cosmin Coman March 17, 2011 at 12:57 PM

      Please be more explicit

  63. Vera March 17, 2011 at 3:15 PM

    Hi! I've just tried to jailbreak my iPhone 4 4.2.1 with greenpoison, but when I put in DFU mode, in the end allways appears a message "Try again". the phone did not even turned on.. I had to do a Hard Reset. Any suggestion?

    • Cosmin Coman March 18, 2011 at 2:56 AM

      You're not entering DFU mode, try it a couple of times if you are new to this

  64. cas van riet March 18, 2011 at 8:12 AM

    it works great !!

    • Anny March 19, 2011 at 11:21 AM

      i can't find the loader thing where is it?

  65. Vera March 18, 2011 at 2:16 PM

    It worked well with my iPod touch and with a iPhone 3Gs, but with the iPhone 4 did not work..

    • Cosmin Coman March 19, 2011 at 3:52 PM

      What error did you encounter?

  66. Anny March 19, 2011 at 10:03 AM

    mine dos not work i jaibarked but my iphone it's blocked

  67. Fenneke March 19, 2011 at 2:24 PM

    Hi, Love Greenp0ison. Had a tethered jailbreak. Didnt even loose any data. Only took 30 sec. Tnx Dev team!!

  68. kelliy March 20, 2011 at 12:30 AM

    i'm so glad that i've jailbroken my iphone.. :D however i would like to know if i can sync my iphone with itunes? will the cydia, installous be gone after the sync?

    • Cosmin Coman March 20, 2011 at 1:26 AM

      No

  69. Kingsley March 20, 2011 at 8:45 AM

    I have done with all the steps given but once I download the apps from installous and after I sync it with my computer then the apps will disappear.. Is there any steps that I have missed out?

    • Cosmin Coman March 22, 2011 at 3:11 AM

      No, the same thing happened to me too. This is a beta version, and there are a lot of issues wit it at this time

  70. andrew March 20, 2011 at 10:22 AM

    hi, i cant seem to get to dfu mode, i did run as administrator in win7, however it kept saying try again. i am using rc6 of GP on a iphone 3g 4.2.1.here's what i did to enter dfu, as per GP, instructed to first to turn fully off, so i did by sliding the red turn of bar. then, i tried the counting methods, holding the sleep for 2 sec, sleep and home for a time, den hold home.. screen went black, heard couple of sounds like when u plug or unplug ur phone, however, GP still says try again??...i have not tried it yet tho with another pc..hope you can help. thanks.

    • andrew March 21, 2011 at 9:03 AM

      tried to use another computer.. a windows and a mac.. still having problems going to DFU mode??.. any help guys?

      • Cosmin Coman March 22, 2011 at 2:53 AM

        Well, i'll check into that and get back to you if i find a fix

    • Cosmin Coman March 22, 2011 at 3:09 AM

      Usually if you have no experience you might get that wrong a couple of times, try it untill you get it right

  71. TeckNoid March 20, 2011 at 11:28 AM

    Hey I JailBreaked My Ipod and When I Connect My ipod to the Pc Itunes Say's error ocourrded and i cant put any songs on my ipod What to Do ??

    • Cosmin Coman March 22, 2011 at 3:06 AM

      What generation?

  72. eshan March 22, 2011 at 7:27 AM

    greenpoison on windows shows ur device is jailbroken......but wen it boot my ipod touch there's no icon of loader or cydia................wat to do?

    • Cosmin Coman March 22, 2011 at 7:58 AM

      Try adding Cydia with redsnow 0.9.6

  73. Edwin March 23, 2011 at 9:15 AM

    hey i did the GP JB, no cydia and all my apps disappeared.i did a restore from backup, but upon reboot i still have the GP boot logo. should i run the latest redsnow overtop? am i still GP jailbroken? i thought a restore would unjailbreak?

    • Cosmin Coman March 26, 2011 at 1:53 AM

      Maybe you did a backup just after the jailbreak. Restore to stock firmware and try again

      • Edwin March 26, 2011 at 3:07 AM

        i ran redsnow over it, it worked like a charm! redsnow installed cydia for me, all is happy!awesome! thanks!

  74. Unpredictable March 23, 2011 at 10:46 AM

    Hi,I have just jailbroken my iphone 4.2 with greenpoison and everything is fine. I connected it to itunes and was presented with 2 options, To set it up as new iphone or restore to backup.I have lots of music and customized ringtones I don't want, to loose so how do I go by it? What should I choose and how to work around it. The songs I can download, but the customized ringtones are just a lot more work.HELLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPPP please.

    • Cosmin Coman March 26, 2011 at 1:50 AM

      Restore from backup

  75. omar March 23, 2011 at 5:24 PM

    Hi ... I have got an Iphone4 with 3three contract my iphone is locked i can only use 3(three) SIM in it ... I want to ask that can I use greenpoison or not... or I hve to unlock my Iphone ??? plz tell me.thankyou

  76. Zashtys March 23, 2011 at 6:46 PM

    I jailbroke my IPod with the unteathered windows vertion of greenpoison and I installed cydia and it said I don't have enough memory but I have nothing on my iPod and then when I click on cydia it doesent work.

  77. Eric Lai March 24, 2011 at 4:49 AM

    Can I ask a question? Why after I jailbroken few set s of iPhone 4 with 4.2.1, the app store can,t operate? Eg: I click on 1 of the app then click on free and install, it will direct jump back to home screen.. Thanks!!

  78. todd March 24, 2011 at 9:33 PM

    I followed all steps correctly and downloaded cydia..i exited it and there was no app...I tried it again following same instructions and went to download cydia again and it says already downloaded....But no app!!! Please help!

    • Cosmin Coman March 26, 2011 at 1:41 AM

      Try adding cydia with redsnow 0.9.6 after the gp jailbreak

  79. cpcheatspopup March 25, 2011 at 5:02 AM

    Thanks!!! GP works got the loader.app and just waiting for an active wireless internet and i'll be free of Apple's unfair limitations!!!

  80. Ed March 27, 2011 at 2:52 AM

    I jb with greenpois0n RC6, and it works, i have Cydia, MyWifi works, can download, get apps, but all my preset apps are no longer on screen (messages, contacts, itunes, appstore, etc.) During the process the battery died on my laptop, ended up restarting the jb once i plugged it back in. Also, when I go to searchlight, i get error that the URL doesn't exist. Can you help on how to fix, if possible without restoring, because that will bring me to upgrade to IPhone 4.3. I have the latest ITunes on my laptop?Thanks,Caio

  81. chris March 28, 2011 at 5:52 AM

    ahhhh!! i just had someone (who i trust) jailbreak my iphone 4 last night, running version 4.2.1. I have cydia and installous, but now my APP STORE is missing! calclculator is still there. i have sbsettings; checked my dock- nothing. i don't think i have any hidden icons??really frustrating and upsetting..PLEASE HELPPP!!!

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