Download Greenpois0n RC5, Untethered Jailbreak iOS 4.2.1 - iPhoneHeat

Download Greenpois0n RC5, Untethered Jailbreak iOS 4.2.1

Greenpois0n RC5, the untethered jailbreak for iOS 4.2.1 firmware is out now. You can download Greenpois0n RC5 from the link below. As the exploit has been patched in iOS 4.3, so the Chronic Dev Team went ahead and released the untethered iOS 4.2.1 jailbreak before iOS 4.3 goes live.

Greenpois0n RC5 can jailbreak iOS 4.2.1 untethered on the following devices: iPhone 4, iPhone 3GS, iPod Touch 4G, iPod Touch 3G, 2G & Apple TV 2. There’s no need of SHSH blobs saved.

Download Greenpois0n RC5

Greenpois0n RC5 is available for Mac OS X and Windows.

Do NOT use Greenpois0n RC4

Detailed step-by step guide will be posted shortly is here:

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71 comments… add one
Hehehe February 4, 2011, 2:16 pm

After jailbreak empty loader

AzaRyDah February 4, 2011, 2:21 pm

What about iPad 4.2.1 ???

bhushangahire February 4, 2011, 2:28 pm

link is not working for download any mirror

GM February 4, 2011, 2:47 pm

it cant jailbreak iPhone 3G

GM February 4, 2011, 2:47 pm


draco809 February 4, 2011, 2:50 pm

can this jb ipad as well?

jimmyjimmy February 4, 2011, 3:22 pm

hi i have a iphone 4 ios 4.2.1 i would like to jailbreak it but site said The requested URL //dl/ was not found on this server

jimmyjimmy February 4, 2011, 3:47 pm

The Greenpois0n RC5 is available for Mac only it dose not work for Windows ????
can some help us who have Windows

thesaipankid February 4, 2011, 4:39 pm


Look above where it says download it’s written in english.
Greenpois0n RC5 is available for Mac OS X for now. Windows and Linux version are expected soon.

jimmyjimmy February 5, 2011, 3:16 am

Dude, my bad Mr. Theasspankid I Look above where it says download it’s written in english.
Greenpois0n RC5 is available for Mac OS X for now. Windows and Linux now it is only for Mac and I did not fix my comment it was can some one help us who have Windows
thank you again

iiiidy4bloiiii February 4, 2011, 5:10 pm

iphone 3G. gets left out again..? for jalibreack..?

Drew February 4, 2011, 9:46 pm

Dude, they discontinued the IPhone 3G updates. That’s why Greenposion isn’t avaible for IPhone 3G

Ordinary_guyz February 5, 2011, 9:52 am

Why would u want a jailbreak for 3G with greenpoison if the 3G is already had an untethered jailbreak with redsnow… Duh???

initin February 4, 2011, 5:55 pm

I have iPhone4, 4.2.1, locked, unactivated.
Downloaded the app, did what it said, the screen now tells me to connect to iTunes which I tried but iTunes then tells me to insert a valid sim (phone book sim doesn’t work anymore)

got.deus February 5, 2011, 2:24 am

try using the phonebook sim again. put on dfu mode and release (using tiny umbrella) to reboot.. this is how i activate my iphone 4G

Romario February 4, 2011, 6:50 pm

For Ipad 4.2.1 Jailbreak using the above guideline FAILED after Jailbreaking process the end message is FAILED 🙁

velox February 5, 2011, 1:26 am

I get the same thing with using RC5-2 on my ipad.

vazi00say February 4, 2011, 7:20 pm

Greenpois0n rc5 cannot be downloaded whenever tried rc4 starts downloading

husyn February 4, 2011, 7:21 pm

“On mac osx 10.5.8 error “The application geenposi0n quit unexpectedly.” Does anyone got this error.

tvdm007 February 4, 2011, 9:18 pm

i’m getting the same error:S

sweetkush303 February 5, 2011, 5:29 am

i got the same prob lemme know if you fix it

louuu February 5, 2011, 10:06 am

so do i

whiteghost February 4, 2011, 7:28 pm

Need windows version but the link for Mac is also RC4!!

WIll believe it when I see it 😉

cyberswine February 4, 2011, 7:31 pm


for Mac down load this is a message “Website Offline, No Cached Version Available”

Romario February 5, 2011, 7:50 am


You can download form the mirror link.

husyn February 4, 2011, 7:43 pm

Process: greenpois0n [1395]
Path: /Users/husyn/Downloads/
Identifier: org.chronic-dev.greenpois0n
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [362]

Interval Since Last Report: 1664 sec
Crashes Since Last Report: 6
Per-App Interval Since Last Report: 0 sec
Per-App Crashes Since Last Report: 6

Date/Time: 2011-02-04 19:41:33.970 +0500
OS Version: Mac OS X 10.5.8 (9L31a)
Report Version: 6
Anonymous UUID: BD143250-9407-4410-910B-DFA95E677A08

Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0

Dyld Error Message:
Library not loaded: /usr/lib/libcurl.4.dylib
Referenced from: /Users/husyn/Downloads/
Reason: Incompatible library version: greenpois0n requires version 6.0.0 or later, but libcurl.4.dylib provides version 5.0.0

alebot February 5, 2011, 1:45 am
sweetkush303 February 5, 2011, 5:33 am

hey i checked out your solution and it was in spanish any way you can walk me thru it in english. i would greatly appreciate it/.

husyn February 5, 2011, 11:32 am


jimmy February 4, 2011, 8:26 pm

i did it but no cydia in loader…wtf

ordinary_guyz February 4, 2011, 9:09 pm

me too.. what the heck??

jimmy February 4, 2011, 10:50 pm

i did the jailbreak with redsnow the the greenpoison..and its working fine

Romario February 5, 2011, 7:57 am

Hi Jimmy,

Could you give me the guideline for redsnow please ?

How about the Greenp0ison ? what MAC OS version did you use ?


mimo February 4, 2011, 8:48 pm

can i use it to jailbreak iphone 3gs with baseband 6.15 , please answer ???

vazim February 4, 2011, 10:57 pm

sitll its giving me same problem m not able to download gp rc5

almel February 4, 2011, 11:05 pm

I tried untethrae my teathered 3GS v. 4.2.1, BB 05.15.04 but with no succes!
Have to use Redsnow to boot again, everithing Ok after, but still tethraed.

jimmy February 5, 2011, 1:44 am

i used the greenpoison first then the redsnow.. and is working great

jimmy February 5, 2011, 1:45 am

if i where u i restore the iphone then do the process again… greenpoison and then the redsnow

mark of milan February 5, 2011, 11:54 am

chronic dev team are sucks,you know why?many windows user are waited for a long time for this fucking greenpois0n and then in the end is for mac user only.fuck you dev team why you’re not released for all users..fuck twit windows version coming soon.this for you chronic dev team fuck you now!not soon or later..

thedanmorales February 6, 2011, 6:44 am

You dumb ass, this shit is a free software, you’re just a fucking downloader, you should go to your pc and try to create yourself a jailbreak, and expect a bitch like you to ask you to go to hell!! the only thing left is wait, otherwise go to hell

Romario February 6, 2011, 1:27 pm

For windows version just out today…..

iPod 2G user February 6, 2011, 6:43 am

I respect that you don’t have a windows version up, can’t wait till you guys make it and keep up the amazing work.

Tnt4ever February 6, 2011, 4:15 pm

Great… Thanks

Green poison Windows version worked for me on 3gs locked to “o*r*a*n*g*e – UK” 4.2.1. base band 06.15.00

I was using tethered ultrasn0w unlock before using GrnPoison Rc5 … i download green poision Rc5 & unlocked successfully … everything running perfectly.

Thank to iphoneheat team for providing the download link & ther dev team for their gr8 effort…

tarekelmalah February 6, 2011, 4:16 pm

I just used GreenPoison on my already thearthed jailbreak by redsn0w and it worked great ,
So what i did was fresh install of 4.2.1 used redsn0w to do the theathed jailbreak once that finished went to GreenPoison and let it do its untheathed magic ! now my iPhone doesnt need a PC to Boot up 😉
Hope u guys dont have a hard time with this , ONE important thing
dont restore or do a fresh install of 4.2.1 inless u got the original sim card inserted or u will have battery drainage issues !

Seeker February 6, 2011, 9:03 pm

I had no problem jailbreaking my iphone 4, but my ipad is a different story. It goes into DFU mode and the jailbreak starts, something flashes up on the screen way to quick to read and I get an failed error. I’ve tried a number of times (that’s a lot of times by the way) restoring an original 4.2.1 firmware and still no change. I just cant jailbreak my ipad.

My ipad is a 3g wifi version running 4.2.1 (clean) and I’m using a mac and the latest version of Greenpois0n (r5.b3). If anyone has any tips out there that would be great because all the how too’s I’ve looked at aren’t helping at all.


tiger February 6, 2011, 11:21 pm

Can any one help me, I got 3gs ,i turn off the phone but every time i plug the USB the phone go on by it sefl that whu I can not go to UDF mode

NateStone6969 February 7, 2011, 4:59 am

Greenpois0n RC5 Jailbreak for windows worked perfect on my I-Touch 4G 64gig 4.2.1 .
thank you

thant zin tun February 7, 2011, 5:44 pm

after jailbreak i can’t activate.can u tell me how to activate

Ananth February 8, 2011, 8:32 am

thanks guys……….. worked for me ….

Jailbreaker February 8, 2011, 9:24 am

in my mac greenpois0n alwayd failed to jailbreak..?
in windows is same to

i using mac os 10.6.6 n windows 7

answer pleasee

Haverr February 25, 2011, 2:50 am

Thanks a lot!
Worked like a charm!

(Ipod touch 8gb 2G | iOS 4.2

daimont March 13, 2011, 12:09 pm

Thank you very much! Jailbreaked from 2nd time , and now i can play on my iPhone 🙂

P.S. You need to turn off Device , then start to jail break when its turned off.

Tahirkhan March 23, 2011, 8:56 am

The Link Does Not Work… Why is this? Someone Please Help.

andy March 31, 2011, 7:43 am

any idea about touch 4.2.1 MC 2nd gen?

Anon April 10, 2011, 7:47 pm


aryam June 13, 2011, 1:15 am

hey i need help
i have a itouch 3g 3.1.3 an 4.2.1
i dont know how to jailbreak it
can u guys help me

sena September 9, 2011, 12:54 am

i have itouch 2g and i said “jailbreak failed”. after that i tried to open it but it coulndt. so, what am i gonna do?

iuy July 27, 2012, 3:47 am

Won’t work for my iPod 2g

venneri giuseppe September 13, 2014, 2:31 am

thx its works greats

ron January 7, 2015, 10:56 am

Does anyone have a copy of Greenpois0n RC5 for Windows? The original sources are gone. Thanks.

Manish Kumar December 25, 2016, 7:57 pm

i can’t jailbreak on my iphone 4g…..?

iPhoneHeat December 29, 2016, 3:40 pm

What problem you are facing during jailbreaking iPhone 4, any specific error message?

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