June 4, 2023
How to Jailbreak Your iPhone 3GS, iPhone 4 Using Greenpois0n (Mac) [4.2.1]

How to Jailbreak Your iPhone 3GS, iPhone 4 Using Greenpois0n (Mac) [4.2.1]

Posted February 3, 2011 at 11:47pm · 143 comments · Add Comment
ashley - January 15, 2013 at 2:38pm
Having problems... ugh help me!
Sharky - December 2, 2011 at 8:25am
If you're raeding this, you're all set, pardner!
pinkapplegirl - April 18, 2011 at 11:37pm
I recently updated to 4.2.6, I managed to go through the jailbreak but the loader does not open, any suggestions?
pinkapplegirl - April 18, 2011 at 11:39pm
I am sorry i meant 4.2.7
yarooo - March 20, 2011 at 5:21am
Hi everybody I'm new idevice user, and i need some help. My Iphone4 4.2.1 jailbroken and my BB v 03.10.01 I didn't have any saved SHSH and in my Cydia it says "This device has a pending TSS request " & when i run TinyUmberela it just show Iphone4 4.3 (8F190) i need to restore my Iphone to 4.2.1 again and you know apple stop singing 4.2.1, i want to know is there any chance to restore my iphone to 4.2.1 ? or someone know about how to jailbreak 4.3 untethered ??? please help me Thanks in Advance
rahul - March 15, 2011 at 12:38pm
loader is not able to download cydia app
grant - March 10, 2011 at 2:39pm
i hav been sitting here for ages and nothings haened it been sitting scrolling and them bottom sayin anic; we are hanging there... can you help me
AzN - March 2, 2011 at 10:40pm
I have a JB iphone on 4.2.1 (tethered). Will i be able to JB again on Greenpoison? Please advise. Appreciate it. Thanks.
ReyBlack - February 28, 2011 at 8:37pm
Hi all! I've just apply greenpoison method to jailbreak my iphone4, but i have 4.1 instead 4.2.1. Now I want to restore to 4.2.1. following this tutorial ( How to Update Your iPhone 4 Without Upgrading the Baseband (Mac) [4.2.1]) but the process doesn't finish. I have my iPhone with the apple screen and the progress bar is about 70%. iTunes is "Restoring iPhone software...". I have tried to restore the official way, but i have the same result. I have tried to restore to 4.1 and the same... I can't exit the recovery mode (i have tried with tinyumbrella, but no success). I am desperate !!! Can anyone help me, please?
Ugh - March 11, 2011 at 5:07pm
* Open Finder * Hold down COMMAND + SHIFT keys and press ‘G’ * Enter “/private/etc/” in the field and press “Go” * Find “hosts” file in the directory * Drag the file to your desktop * Open it in text editor * Remove the line that has gs.apple.com entirely or put a # at the beginning of it to comment it out * Save the file * Drag it back to the /private/etc/ folder. * You’d need to enter your username and password to authenticate the move
cha_cha_mia - February 10, 2011 at 10:30am
I went through this post and it seems now I can do an untethered jailbreak w/ the iPhone 3gs's latest firmware - but still cannot unlock? just wanted to confirm. Here's my background: iPhone 3gs was bought used off craigslist in August 2010 and had never been jailbroken. After purchase, it was upgraded to the latest firmware at the time which was version 4.0 (8a293) . It was then jailbroken (I believe via jailbreakme.com) and unlocked too be used on t-mobile. Nothing has been updated on the phone since then but I would like to. I just checked and it has a baseband (modem firmware) right now of 05.13.04 Looking at this page, if I was to update to the latest version (4.2.1?), I could jailbreak via Greenpois0n but I could not unlock so I could use with other carriers, is that correct? specifically this line from this post: "Do not update to iOS 4.1 or iOS 4.2.1 if you need the unlock. Ultrasn0w does not support that baseband yet. "
jonnie - February 10, 2011 at 7:51am
RC5B4 works like a dream. Remember to keep holding the home button until the app says JB complete ! Bit of a quirk where iTunes says the phone is in DFU, but sorts itself out a few seconds later. Well done guys, good job.
MingY - February 9, 2011 at 9:58am
Hi, Help please! I have a 3GS with fixed bootrom. I jailbreaked (with redsnow) and unlock (with ultrasnow, with iPad baseband) in December 2010. It was a tethered phone. Last night (Feb 9), I applied greenpoison to get untethered jailbreak and it ran smoothly and the phone gets untethered now. However, I think I did something stupid after that. I tried to get rid of the program and data so I can give it to my family member to use overseas. However, the phone never pass through the booting screen. Now, when rebooting it, the Apple logo will show then the skull logo follows but it freezes there. I tried to rejailbreak serveral with greenpoision without any luck (greenpoison will let me run jailbreak, but phone still can't boot properly). I tried to use redsnow to re-jailbreak it but the program will not let me do it and report error when trying. I even tried to use redsnow to just "boot the tethered phone" but redsnow report error. Anyone of you have same experience and know how to fix it? Really appreciate your comments and help!
Jeeves - February 27, 2011 at 6:41pm
I had the same issue and just fixed it. Look for jailbreaking 4.2.1 using RedSn0w. Download the firmware that it recommends downloading. Restore using the downloaded firmware (using alt and selecting the downloaded firmware). One restore in complete in itunes you will have the iphone all reset with the screen asking you to connect to itune to activate. After reaching this point, you will be able to jailbreak using GreenPois0n. However, you will not be able to unlock it yet. Hope this help.
kathy - February 8, 2011 at 11:53pm
Thanks so much for this!!! Step by step instructions were right on!!!!
Narasimha - February 7, 2011 at 8:09am
I have done the jailbreak and loader also i can see on the screen, i was try to open the loader its saying all the time connect to internet , infact i have already connected to wifi and found its working fine , evevthough its still asking for connect to internet , please is there any chnages are require prior to unlcok the phone
Jen - February 7, 2011 at 12:48am
I have jail broken my phone and now am wondering can i use any carrier ??
john - February 7, 2011 at 4:31am
why don't u stop wondering and try it?
ddd - February 7, 2011 at 11:41am
jailbreaking an iphone does not mean that you can use any carrier. You have to unlock first by installing ultrasn0w via Cydia. Whether your iphone can be unlocked or not with this software depends on the version of your baseband (check setting-› info).
Jampo - February 6, 2011 at 1:14pm
I did the jailbreak yesterday and all worked well the first time. Reinstalled Cydia and most of my apps. Today, when I plugged the iPhone 4 into my Mac, I got a message that the contents of the iPhone could not be read, and I needed a restore. WTF? Any ideas why I could load new stuff on thru iTunes yesterday, and today it's not working?
Georges - February 6, 2011 at 6:37am
Once Jailbroken Cannot open paid books in Ibooks No problem with free books Same problem in iphone and Ipad
JBuser - February 6, 2011 at 4:23am
I jailbroke my iphone 4 a few hours ago with greenpois0n-osx_rc5.2. Everything works fine so far. Now the official site has an updated version gp_mac_rc5_b3.zip. Is it wise to rejailbreak because of improved stability or is that version only for the users who are experiencing severe problems? In case of rejailbreak: just run greenpois0n again or do a clean restore first?
george - February 6, 2011 at 12:04am
worked great with my iphone 4, tried this the first time with the first release but no success, with the b3 release worked like a charm. PS: used the "sudo" command. (terminal way).
DannyThomson - February 6, 2011 at 12:00am
FYI...app has been updated to fix various bugs and issues. Happy Jailbreaking!
soymilk - February 5, 2011 at 7:14pm
does the jb upgrades you to 4.2.1 or you need to upgrade first
soymilk - February 7, 2011 at 4:35am
if you read the instructions carefully, you'd have seen the answer to your question. read first before asking stupid questions.
soymilk - February 7, 2011 at 6:43am
use your own handle and thanks for your help JA
RicoMagic - February 5, 2011 at 6:39pm
Worked great on iPhone 4! Did a clean restore just as the directions indicated, now on iOS 4.2.1with BB 01.59.00. Great job guys!
homesick04 - February 5, 2011 at 5:02pm
Great work! it works with iPhone 3gs.., Thanks Guys...,
soymilk - February 5, 2011 at 7:07pm
do you first update to 4.2.1 b4 jailbreaking?
Qachee - February 5, 2011 at 3:39pm
Can anyone tell me if it will work for iPhone 3GS on ios4.1 jailbrokwn with redsnow and unlocked with ultrasmow using iPad basement? I need the unlock feature. Thanks
neilgmac - February 5, 2011 at 2:14pm
Runs CONSOLE on MAC will solve the problems!
C - February 5, 2011 at 3:54pm
Hi! I was wondering can you explain the steps to using with console.. do u just open it and then run greenposi0n.. and just the phone has to be restore to a fresh new firmware.. also do u do greenposi0n and then use redsnow or vice versa... thank u very much in advance for your help
eni9889 - February 5, 2011 at 10:25am
For everyone who is having issues with this not working you might have to use terminal to do it. I made a video tutorial that should help you. I tried about 20 times without terminal and it didn't work and it worked perfectly through the terminal. Here is the video: http://www.youtube.com/watch?v=E-qMGZYVvU8
David - February 5, 2011 at 3:23pm
this is the only thing thing that would get it to work for me! THANK YOU
jeeriko - February 5, 2011 at 10:04am
Worked without any problem on my iPhone 4. Downloaded 5 min ago. If you go into something you don't know, it's always easier to blame everybody else but not your own stupidity. Thanks to dev's !
soymilk - February 5, 2011 at 9:16am
site is down cant even download the darn poison
Don't Jailbreak with GREENPOISON
Don't Jailbreak with GREENPOISON - February 5, 2011 at 8:46am
This jailbreak is simply terrible. PERIOD. You guys bragged, showed us your clips of how great your jailbreak was for WEEKS. Yes no one pays for these but why would we ? If you put yourself out there and brag then take this like a man . This version is terrible. APPLE has defeated you for good on Jailbreaking.
soymilk - February 5, 2011 at 9:18am
are these people the same as iphone-dev team
gaalA - February 5, 2011 at 8:19am
Hey guys, i have one question pls. Using Greenpois0n ti JB Iphone 4, am i going to lose all my current apps, music, etc????
Mo - February 7, 2011 at 10:58am
No, and if you do, then just sync with iTunes to get them back on the phone.
j1mpst3r - February 5, 2011 at 4:59am
i have been jailbreaking since my iPhone 2g. i have jailbroken progressively from every iOS to the current 4.2 on iPhone 4 (thanks Team) my question is: after jailbreaking i always restore to my back up so i keep my contacts/sms etc. i feel i have accumulated an unneccessary amount of iPhone back up files taking up a huge amount of space on my mac :) can i erase these and keep just the latest one, will this have implications if i ever need to downgrade my iOS? thanks in advance, J
Alex - February 5, 2011 at 9:09am
You can erase your old backups except for your latest. Backups have no implications related to jailbreaks. They simply store your program data for apps you have on their and miscellaneous system files. It won't affect you in any negative way and you would use old shsh's to restore to earlier firmwares. Backup your shsh's using tinyumbrella.
Alex - February 5, 2011 at 12:14am
Finally got it to work on the iPAD. Needed to run the util as root from a terminal. More details here http://www.ihackintosh.com/2011/02/random-problems-and-solutions-after-greenpois0n-rc5-jailbreak/
brother - February 4, 2011 at 10:57pm
comrades, I need help. Can't download the file, is there any other link I can download? thanks much
ronron - February 4, 2011 at 10:17pm
Done, but I cant open cydia :( Any answers? Thanks note : I use mac for jailbreak
Terence - February 13, 2011 at 3:01pm
Hey how are u? Did you ever get resolution on Cydia not opening? I used Green poison on iPhone 4... But cyida make the phone respiring everytime
Giggio - February 4, 2011 at 8:40pm
Cydia installed !! Thank you guys. Anyway, is there a way to remove the skull when the iPhone starts? (original boot logos)
yank - February 5, 2011 at 7:41am
this is where iPhoneItalia comes in! Thanks to the folks in Italy, we now have a guide to enabling the magic animations, and it’s oh-so-simple. Step 1: Jailbreak your 4.2.1 iDevice using GreenPois0n RC5, step by step guide for which can be found here. Step 2: SSH into your device and place the aforementioned file in /usr/bin/. Now the animated boot logo is switched on. To deactivate it, simply remove the Animate file via SSH and reboot again.
Giggio - February 5, 2011 at 10:33am
Have removed the file "animate" and skull is gone. Grazie :)
dreamncharms - February 4, 2011 at 8:10pm
Can this be used on iPhone 3G ?
jonnie - February 4, 2011 at 7:31pm
Guys, this in all honesty isn't great. After many attempts (and 2 Macs) I finally have a JB iPhone4 4.2.1, but with a combo of GreenPoison and RedSnow. Many, many problems to be resolved.
soymilk - February 4, 2011 at 6:52pm
ever used greenpois0n , only pwnage so i have the following question. do i need first to update to stock 4.2.1 before the jailbreak i am currently on jb 4.1
eni9889 - February 4, 2011 at 2:08pm
For those of you having issues: http://www.youtube.com/watch?v=E-qMGZYVvU8
lorvar - February 4, 2011 at 2:54pm
Tried this too, nada.Two macs running the latest everything. Ridiculous. I'll wait for the PC version.
yank - February 4, 2011 at 1:39pm
Didnt worked for me......ITS NOT WORKING..
yank - February 4, 2011 at 1:32pm
hello,i was stuck on itunes screen on my iphone 4.2.1 then i tried to jailbreak my iphone,i jailbreaks my iphone,everything goes well and when after completing jailbreak process and when it RESTART .it again stuck to itunes screen....please help.. did anybody faced this problem.
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