How to Jailbreak iOS 4.0 on iPhone 3GS New Bootrom

By Sandip Dedhia on July 4, 2010
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Jailbreak iPhone 3G 3.1 with PwnageTool 3.1
Those users having iPhone 3GS will be knowing that its not possible to jailbreak iOS 4.0 on iPhone 3GS with any existing jailbreak tools like Pwnagetool 4.0.1 or Sn0wbreeze 1.6.2 since both the tools are only meant for iPhone 3GS with old bootrom (how to check iPhone 3GS bootrom).

But now you don’t have to disappoint if you have iPhone 3GS with new bootrom since iH8sn0w has come up with guide to jailbreak iOS 4.0 on iPhone 3GS new bootrom though procedure is quite lengthy & has most important requirement of saved SHSH blobs of 3.1.2 firmware for your iPhone 3GS.

If you don’t know what you are doing then you must stay away from this iPhone 3GS 4.0 jailbreak method. This guide is not for regular user.

Follow complete step by step guide to jailbreak iPhone 3GS with New bootrom here.

<img width=”162″ height=”186″ alt=”Jailbreak iPhone 3G 3.1 with PwnageTool 3.1″ src=”http://news.blogsdna.com/wp-content/uploads/2009/01/jailbreak-ipone-3g-pwnagetool-225.jpg” title=”Jailbreak iPhone 3G 3.1 with PwnageTool 3.1″ style=”float: right;” class=”alignright alignnone size-full wp-image-2303″>
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Sandip Dedhia

Sandip Dedhia

Sandip Dedhia is the founder of Blogsdna.com, he loves to write on technology, gadgets & web services. At Blogsdna you can read his Windows & freeware software related articles. He is on twitter too @sandipnd View author profile

  • Matt

    iPhone 3GS new bootrom 4.0 jailbreak guide: http://www.youtube.com/watch?v=I9rHTHvo-Ho

  • 029310

    could this be more poorly written?

  • Sreenath

    Hi,

    I have an iPhone 3Gs which I upgraded to version 4.0 by mistake. I want to jailbreak it (otherwise it is of no use to me here in India). Can you please tell me what an SHSH blob is? And how do I obtain one for 3.1.2 for my phone? Thank you.

    Sreenath

  • Pinar

    Hi, I have an iPhone 3GS that was on firmware 3.1.3, with the 05.12.01 baseband (it was JAILBREAKED and UNLOCKED)..then, the other day, I accidentaly upgraded to firmware IOS 4 and now Cydia is gone and when I insert my Vodafone sim card, I have NO service! Please, help me somebody!!!!

  • lee

    @sreenath well now you have updated you cant get the blobs as they are saved using cydia and as your iphone is not jailbroken you cant use cydia and the blobs are diffrent for all 3gs new bootroms devices so its not as easy as juyst downloading them from the net sorry mate its a waiting game at the moment but i dont think it will be that long fingers crossed lol…. now 3gs (new bootrom) owners do not update using sn0wbreeze as u will loose your jailbreak i did this all went well to start with i updated cydia downloaded ifile it was going great i loved it!! the new folders are great but with a jailbroken phone anyway
    back to the story then i wanted to get my appstore apps back on my phone i synced it with itunes thats sync not update and apple the twats updated my phone while it was syncing they removed cydia and updated my bassband-words cant explane how much apple have taken the piss how dare they update me without asking me first and remove stuff from my phone without asking me they are criminals and i want to take them to court a-holes i have spent around 50 pounds on jailbroken stuff and they just removed my ability to use that stuff for now and mabe for ever they are thieves
    as people ca see im p1ssed right off!!!!! p.s thanks for trying ih8sn0w it was fun using your jailbreak intell apple took it 1 to far

  • any idea when d iphone 3gs 4.0 newbootrom jailbreak of redsnow is comming out??

  • saireddy

    @lee
    i did the same mistake as yours with my 3gs. please let me know when will the jailbreak available for my upgraded to ios 4.0.1 3gs new boot rom 3gs .please do contact me on my email saireddy@yahoo.com and let me know plzzzzzzz.

  • alo

    thanks but yall never mentioned that you must have the original sim card to activate the phone if you dont you will have a headache with the 3gs 4.0 5.13.04.

  • Besmir

    I have an iphone 3GS (3.1.3) new bootrom, factory unlocked, and i upgraded to iOS4.0.1. i used jailbreakme.com, it said succeeded, but screen got stuck in pink wallpaper and i had to close safari. it installed cydia on my home screen, but when i connect my iphone with PC Suite (i can not use iTunes, it says there was an error sync applications) it says iphone is not jailbroken. what should i do. i have no backups.
    Thanks

  • marsha

    I have a 3GS (jailbroken) with software version 3.1.3 w/new bootrom. Can you tell me how I can get version 4.0.1 now? Because when I open up Itunes now, it only has the option of updating to the 4.0.2 and I don’t want that since I will want to jailbreak it.

  • Alex4728

    Hi
    help me!!!!i have official unlock iphone 3 gs MC 05.14.02 and i did update to 4.1 and i have not SHSH how can i do jailbreak or DOWNGRADE to 4.0.1?

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