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Thread: Jailbreak 4.2.1 with redsn0w 0.9.6b4

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MartiniBoy got out in front with this earlier today, but I just wanted to make sure the news was on the main page. The Dev-Team updated redsn0w to version 0.9.6b4
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  1. #1
    MMi Staff Writer Paul Daniel Ash's Avatar
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    Default Jailbreak 4.2.1 with redsn0w 0.9.6b4


    MartiniBoy got out in front with this earlier today, but I just wanted to make sure the news was on the main page. The Dev-Team updated redsn0w to version 0.9.6b4 today, which, as Nick detailed yesterday, provides an untethered jailbreak of iOS 4.2.1 for iPhone 3G, older iPhone 3GS, and non-MC iPod touch 2G, and a tethered JB for the iPhone 3GS (new bootrom), iPhone 4, iPad, iPod touch 2G (MC model), iPod touch 3G and the iPod touch 4G. thanks to a combination of pwnage2 exploit, the arm7_go exploit, 24kpwn, and limera1n. For best results, upgrade to iTunes 10.1 first.

    Again, it's very important to note that if you unlock, you cannot use redsn0w as it will update your baseband. So if you're an unlocker, or have a newer iDevice and would just prefer the security of an untethered JB, wait for the PwnageTool update before loading 4.2.1. Even if you are ready (like I was) to take the plunge, make sure you back up your SHSH first.

    Source: Dev-Team Blog

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    iPhoneaholic adrian1480's Avatar
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    yay Jailbreak!

    I'll be waiting for the PwnageTool update, personally. Good luck to all who go with redsn0w!
    Edit Poseidon:

    For everyone with a newer device - iPad, iPhone 4, newer 3GS, New iPod Touch.

    Red Redsnow first to install Cydia. Your device will finish the jailbreak process and Cydia will appear white and crash when you try and open it.

    THEN run redsnow AGAIN and chose "Just boot tethered right now" which will run through the process again but this time Cydia will appear as normal and open up just fine.

    Thank you to the post on the second or third page for pointing this out!
    Last edited by Poseidon79; 11-23-2010 at 05:25 PM.

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    Green Apple
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    If I upgrade then jailbreak again do I have to download all my jailbreak apps/themes all over again? Or is there a way to preserve it??

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    iPhone? More like MyPhone
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    Is cydia and sb settings and winterboard working now then?

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    iPhone? More like MyPhone brianlg's Avatar
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    what are the specifics for "old 3GS" my i4 will be tethered, but my brother has a 3gs.

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    The One and the Only (retired secret moderator) iPod's Avatar
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    Does this mean cydia works now?

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    iPhoneaholic
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    Is this gonna boot the os unjailbroken or lock into recovery mode?

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    Quote Originally Posted by big poops View Post
    If I upgrade then jailbreak again do I have to download all my jailbreak apps/themes all over again? Or is there a way to preserve it??
    @big poops
    Get PackageBackup from Cydia. It's paid but supposedly more reliable. AptBackup is free and 'might' work but I don't know if it requires a 4.2.x update. If nothing else, you'll have to reinstall ur App Store apps after restoring with AptBackup.

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    Remember this a teathered jailbreak so you will have to jailbreak everytime you have to reboot. You will lose your unlock if you do this jailbreak
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    Livin the iPhone Life thazsar's Avatar
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    Quote Originally Posted by brianlg View Post
    what are the specifics for "old 3GS" my i4 will be tethered, but my brother has a 3gs.
    Old 3GS is untethered

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    Quote Originally Posted by big poops View Post
    If I upgrade then jailbreak again do I have to download all my jailbreak apps/themes all over again? Or is there a way to preserve it??
    Search in Cydia PkgBackup...
    iPhone 4 with 4.1 Out of the box

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    Livin the iPhone Life thazsar's Avatar
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    Quote Originally Posted by macfan406 View Post
    Is this gonna boot the os unjailbroken or lock into recovery mode?
    This is a restore w/ custom FW. If u end up in Recovery Mode afterwards, RecBoot 'should' be able to get u out of it.

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    iPhone? More like MyPhone brianlg's Avatar
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    Quote Originally Posted by thazsar View Post
    Old 3GS is untethered
    yes, i know. My question is how do you know if it's an "old 3GS" i know old bootrom probably, but how can you tell?

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    iPhoneaholic gthugballin's Avatar
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    I jailbroke my iphone 4 this way last night, but cydia wouldn't open for me so i downgraded back to 4.1 anyone try this on iphone 4 with different results?
    When the police want to know where someone is, they ask apple.

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    My iPhone is a Part of Me exNavy's Avatar
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    Quote Originally Posted by Paul Daniel Ash View Post
    you cannot use redsn0w as it will update your baseband.
    No it doesn't.

    Using itunes to install 4.2.1 firmware updates the baseband as part of the update/restore process.

    It's an important distinction to make. Redsnow jailbreaks whatever is on your phone.
    I write Mac only tutorials for the iPhone. Check out my iOS 6 and iOS 7 tutorials: modmyphone d o t us

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    Green Apple
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    So i can finally update my 3G from 3.1.2 to 4.2? i have a handful of apps that no longer get transferred to the phone because they require 4.xx fw to work, i don't care about unlocking, but i do care about all the little tweaks i've done to the phone.

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    iPhone? More like MyPhone iPhoenix3g's Avatar
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    Quote Originally Posted by gthugballin View Post
    I jailbroke my iphone 4 this way last night, but cydia wouldn't open for me so i downgraded back to 4.1 anyone try this on iphone 4 with different results?
    You didn't use beta 4, you must of used beta 3. I have used this with my iphone 4 and cydia has bin updated and works just fine now. A bit annoying you have to DFU your iPhone if you need to reboot.

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    For whatever reason the jailbreak works fine on my 4.2.1 iPad but Cydia shows up white and crashes... wth.
    [SIGPIC][/SIGPIC]

  23. #19
    iPhone? More like MyPhone iPhoenix3g's Avatar
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    Quote Originally Posted by tw1zt3d View Post
    So i can finally update my 3G from 3.1.2 to 4.2? i have a handful of apps that no longer get transferred to the phone because they require 4.xx fw to work, i don't care about unlocking, but i do care about all the little tweaks i've done to the phone.
    I've heard from my friend with a 3g that 4.2.1 runs a little faster

  24. #20
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    Default ???
    As others have awed does this require cydia patch or not????

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