Greenpois0n Jailbreak for iOS 4.2.1 out

It’s really bound to happen for every new version of iOS 4.2.1 and the Chronic Dev team is the first one to release it (albeit with some limitations).

Biggest limitation as of now is that it’s only available on the Mac (Windows and Linux might follow soon).

This is just a jailbreak for 4.2.1 but there’s no SIM unlock yet. Feel free to try it with your iPod Touch, iPad and iPhone 4.

See Greenpois0n here.

Abe Olandres

Abe is the founder and Editor-in-Chief of YugaTech with over 20 years of experience in the technology industry. He is one of the pioneers of blogging in the country and considered by many as the Father of Tech Blogging in the Philippines. He is also a technology consultant, a tech columnist with several national publications, resource speaker and mentor/advisor to several start-up companies.

https://www.yugatech.com

18 Comments

Norman says:

14 years ago

Why I cant find yugatech’s feed in instapaper?
- Reply
deuts says:

14 years ago

Abe, what does it mean that there’s no sim unlock yet?
- Reply
cosmic says:

14 years ago

Ibig sabihin, jailbreak lang yan. Yung pang unlock, di pa lumalabas. Kaya lahat ng nagaabang ng unlock, DON’T upgrade to iOS 4.2.1.!! unless if your iP4 is on baseband 01.59.00, you can use TinyUmbrella to preserve baseband.

In short, if you’re not on BB01.59.00,

DO NOT UPGRADE TO IOS4.2.1!!

YOU WILL LOSE YOUR UNLOCK!!

Antayin daw muna nila ilabas ang iOS4.3 bago ilabas ang pang unlock accdg to Chronic Dev team.
- Reply
john says:

14 years ago

@cosmic thanks for the clarification
- Reply
Benchmark33 says:

14 years ago

sad :( all the downloading site of greenpoison has been block…maybe by apple company :(
- Reply
Carlo says:

14 years ago

I don’t think Apple blocked the greenpoison website. It’s legal to jailbreak. I think the site has too many visitors.
- Reply
Benchmark33 says:

14 years ago

Yahoo! I got the file…will try it next time. Hehehehe

yup, Carlo, I think you are right…it is not blocked…perhaps its their system is loaded due to thousands of people accessing their site :-) Thanks!
- Reply
LunaTech says:

14 years ago

got my cousin’s ipod touch to jailbreak with 4.2.1. maybe this week my friend’s iphone 4 heheheehhe
- Reply
Jonaflormicfren says:

14 years ago

I like this post. thanks you. http://ritratos.blogspot.com/
- Reply
trickz says:

14 years ago

Is there a tool in jailbreaking my heart? – im getting emo here.. hehe… nothing to comment. Just dropping by to say this site has loaded with latest info.

@all is there any site that gives information about the latest technologies?
- Reply
Lester says:

14 years ago

What’s the difference between 4.1 jailbreak and 4.2.1 jailbreak? are there differences between compatibility of cydia apps? I would like to upgrade my ipod touch to 4.2.1 but i’m worried that i’ll loose my application data, game save files, and some cydia app compatability.. please give me some info.. thanks :)
- Reply
Chris says:

14 years ago

@Lester, back up first your device in 4.1,, then upgrade it to 4.2, jailbreak it add your cydia sources, install appsync 4.2.. Then restore your device from the back up you just made under 4.1 ..there will no any changes in your apps except if the app is not comptible w/ 4.2 it won’t work..

@deuts, if you rely on unlock dont use this jailbreak instead use PwnageTool this will allow you to update your device to 4.2 and jailbreak it.. but it preserve your current baseband.. TinyUmbrella will saves your SHSH of your device..
- Reply
JL says:

14 years ago

Sir ano pong gagawin ko ngayong narestore ko ung iphone? nawala kc ung mga application
- Reply