Download GreenPoison RC5 Untethered 4.2.1 Jailbreak for Windows

Andrei Alexandru on February 6, 2011 with 29 Comments

Well finally all Windows users can now use the GreenPoison RC5. The guys at Chronic Dev Team have just released the Windows version of GreenPoison RC5 untethered 4.2.1 jailbreak for iPhone, iPad and iPod Touch. With no difference than the Mac version, the Windows version is also compatible with iPhone 4, 3GS, iPod Touch 4G/3G/2G and iPad.

Get GreenPoison RC5 from the download link found at the bottom.

If you are a Windows user than you should know that instructions for jailbreaking IOS 4.2.1 untethered are no different than those for the Mac version. Follow our simple tutorial to jailbreak iPhone, iPad and iPod Touch on IOS 4.2.1 using untethered GreenPoison RC5.

Download GreenPoison RC5 for Windows

Follow us on Twitter or like our Facebook page to keep yourself updated with the latest news, tips and tricks for your Apple, Android, BlackBerry or Windows Phone device

about the author

Alexandru (nickname ADU ) is the other smartphone enthusiast who writes articles for our Android and BlackBerry departments, providing the latest software news, OS releases, upcoming devices, prices, reviews and all kind of very useful information. He owns a Samsung Galaxy S device.

Discussion 29 Comments

Baxter February 7, 2011 at 2:52 PM
Its not jailbreaking my 3gs. It keeps saying failed. Do I need to be connected to the internet when doing it or? Does iTunes need to be opened? Just wondering any info is appreicated.
supertiger February 8, 2011 at 9:15 AM
why does it fail? it had been shown try agian try again. and the fade one would say that waiting for DFU. whats it goin? how can i do? so plz get me an answer.. wanna get it much. where is the expert! anyway could you answer me via the email belowthesuperooh@gmail.complease..
Rustik February 10, 2011 at 12:10 PM
Sorry for stupid question but does it unlock and jailbreak iPhone4 ios 4.2.1 with baseband 3.10.01?
- Cosmin Coman February 10, 2011 at 12:23 PM
  No, and there is no such unlock yet. Follow us and we'll keep you posted. Thanks!
laurence February 16, 2011 at 10:50 PM
does it unlock iphone 4g, ios 4.2.1?? why does my applications stop running after doing so.. tnx in advance :)
- Cosmin Coman February 18, 2011 at 10:41 AM
  it doesn't unlock. Greenpoison is only a jailbreak
D February 21, 2011 at 7:52 AM
I have firmware 4.2.1 Ipad baseband.Used greenpoison to jailbreak and installed ultrasnow to unlock the carrier.O2 will appear but I can only use the 3g service for internet.I cant call or text at all. Any help? I tried pushfix also but no effect.Cheers
keith February 22, 2011 at 10:15 PM
ey man this jailbreak want let you put 3GS in dfu. how can i make it work?
- John February 25, 2011 at 7:20 PM
  just click on the prepare button, then follow what it says.
sanjay varma February 24, 2011 at 11:55 AM
hi., i purchased iphone 3gs from ebay usa,the seller told it was unlocked by apple care.version4.2.1 i cant start the phone even once,the screen is just dead.when connected to itune it says iphone in recovery mode.even restore option not activated in itune screen.i tried to but cant get it to dfu mode .apple people say it is locked by at&t and only they can do unlock.please help
- Cosmin Coman February 26, 2011 at 10:55 AM
  there should be a restore button in iTunes. If you don't have internet access on that PC the restore button won't appear. Some security measure from Apple...
Erik February 26, 2011 at 9:24 PM
It's not compatible with 3G?
- Cosmin Coman February 27, 2011 at 11:31 AM
  no, as far as i know
jal March 5, 2011 at 8:10 PM
my facetime freeze at "waiting for activation" after jailbreak with greenpoison . my device is iphone 4 running on ios 4.2.1. need ur help...plzz
- Cosmin Coman March 7, 2011 at 2:54 PM
  Try using SAM to activate officialy
  - Jal March 16, 2011 at 6:43 AM
    What you mean using SAM. I don't understand... Sorry for this question...
  - Cosmin Coman March 16, 2011 at 3:56 PM
    SAM is a Cydia app that allows you to activate your iphone officially
  - Jal March 16, 2011 at 10:25 PM
    Yes, finally my FaceTime is back after I installed MiTime...
Brian March 7, 2011 at 3:21 AM
Just updated my 3Gs to 4.2.1 and jail broke with greenpois0n everything seemed to go well until I make a phone call. then the springboard crashes each time. Any suggestions?
dh March 8, 2011 at 6:30 PM
Hi,jb my iphone4 w 4.2.1.somehow the cydia icon doesnt appear. tried a few times to re-install greenpoison, cydia icon still doesnt appear. shows error message: cydia is alredy installed.please advise. :)thanks!
- Cosmin Coman March 9, 2011 at 12:19 AM
  try adding cydia using redsnow 0.9.6
Ehren March 14, 2011 at 4:54 AM
Very nice and clean! Hopefully it doesn't lock up my iPod like it did my iPhone when I was using redstorm
Felix March 19, 2011 at 1:19 PM
Can someone help me, i've installed the gc and press loader and then installed cydia. However i can't seem to sync the applications i download from apptrckr.org and my itunes keep saying error or not authorized. can someone help me with this?
- Cosmin Coman March 19, 2011 at 3:38 PM
  Did you authorize your pc?
Strakk March 21, 2011 at 8:51 PM
Does it work for a 8gb iPod touch ?? I haven't tried yet because mine is a 8gb version 4.2.1. iPod touch
- Cosmin Coman March 22, 2011 at 2:39 AM
  of course it will work, as long as it isn't 1st generation
  - Strakk March 22, 2011 at 9:59 PM
    Thanks
abhishek March 22, 2011 at 10:36 PM
when i install green poison it does not get install.The black screen comes it says that panic-we are hanging here....... what i do reply me
CXP2 March 27, 2011 at 1:43 PM
i tried jailbreaking my itouch 4g and it said that it is done, cydia icon is there but i cannot open it. i tried to restarting it and it's the same. please help. thanks!