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  • 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
    This article was originally published in forum thread: Jailbreak 4.2.1 with redsn0w 0.9.6b4 started by Paul Daniel Ash View original post
    Comments 284 Comments
    1. thazsar's Avatar
      thazsar -
      Quote Originally Posted by brianlg View Post
      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?
      Check Settings-General-About
      Under CARRIER row, you'll see either MB or MC and then some numbers.
      If it's MB, he's safe
      If it's MC, the fourth and fifth digits (numbers) represent the week when the phone was produced. It was either week 40 or 41 when Apple switched over to the 'new MC' model making it tethered. Hope that makes sense...
    1. iPhoenix3g's Avatar
      iPhoenix3g -
      Quote Originally Posted by IphoneReaper View Post
      As others have awed does this require cydia patch or not????
      The new beta does not require a patch, as cydia has been updated.
    1. Poseidon79's Avatar
      Poseidon79 -
      Downloaded 2 diff versions of 0.9.6b4 from the Dev blog with the same issues... grr
    1. thazsar's Avatar
      thazsar -
      If ur that concerned about a tethered JB, just wait for comex to give the okay. Patience is a virtue!!! :-p
    1. sp00nfedem1's Avatar
      sp00nfedem1 -
      guys dont forgot after you jailbreak with b4 redsn0w, remember to run it again and this time choose boot tethered only! got me the 1st time too.
    1. iPhoenix3g's Avatar
      iPhoenix3g -
      Quote Originally Posted by Poseidon79 View Post
      Downloaded 2 diff versions of 0.9.6b4 from the Dev blog with the same issues... grr
      Very odd, Maybe a nice restore and try a fresh ..
    1. vindutch's Avatar
      vindutch -
      Quote Originally Posted by sp00nfedem1 View Post
      guys dont forgot after you jailbreak with b4 redsn0w, remember to run it again and this time choose boot tethered only! got me the 1st time too.
      + 1
    1. trek-life's Avatar
      trek-life -
      Quote Originally Posted by Poseidon79 View Post
      Downloaded 2 diff versions of 0.9.6b4 from the Dev blog with the same issues... grr
      My ipad had the exact same results this morning. I rebooted and checked "just boot tethered right now" and it worked and has been working since.
    1. vantheman169's Avatar
      vantheman169 -
      Hmm whats all working on 4.2.1 as far as jailbreak goes....we need a list like they did with 4.0
    1. viriiguy's Avatar
      viriiguy -
      If your Cydia icon is white, then you need to run redsnow again and tell it to boot you tethered only.

      As for what works from Cydia? I can tell you grip does not!!! It Bricked my iPad. I had to reformat and StarT over.
    1. LearningMan's Avatar
      LearningMan -
      OK... here's a question I don't recall having ever seen asked. Maybe because it's never been relavent until now.

      Let's say I have a device I JB that's tethered for now. Is it the general concensus that when a future JB becomes available that does NOT require tethering, that I would simply be able to run that JB and not have to deal with re-installing everything and the device would simply become bootable w/o tethering or would I have to start all over again from scratch? Granted, I have Pkgbkup but I just want to know.

      Anybody know for sure or want to rip through my logic and tell me why this wouldn't be the case?

      FYI... this more personal intellectual curiosity. I generally wait a month or so for everything to stabilize before I jump in. I'm fine with what I have but I have an older 3Gs, a 2G, a 4 and an iPad. I'm more excited about getting everything on an even keel than the feature set proper. I have most of the same features now with JBs anyway.
    1. jailbreakwithgreenpoison's Avatar
      jailbreakwithgreenpoison -
      Is iPod touch 2g tethered
    1. godsrainbow1984's Avatar
      godsrainbow1984 -
      When can we expect an untethered JB for iPhone 4's?
    1. thazsar's Avatar
      thazsar -
      So ur asking, hypothetically, if one were to JB 4.2.1 right now with an ip4 making it tethered; and then the untethered JB came out, hypothetically, next week. Would they lose all their JB apps/info from the tethered JB if they upgraded to the untethered JB?

      If that's ur question, it depends on the 'type' of JB created for the untethered. Obviously, a custom FW tether would erase everything. A JB allowing us to keep all of our apps/info (like blackra1n, jailbreakme 2.0, limera1n, greenpois0n) would just give us the option to reinstall Cydia. Reinstalling Cydia will not remove ur current JB apps BUT those current JB apps will not appear under Packages anymore.

      Hope I'm accurate regarding this and hope that helps!
    1. thazsar's Avatar
      thazsar -
      If, for S&G (!), u open up limera1n and reinstall Cydia, you will see what I mean. BTW, greenpois0ns 'Loader' will not let u do this...
    1. Jordanrocks115's Avatar
      Jordanrocks115 -
      Cydia doesn't work and when will the new Cydia update come out?
    1. mrdjflood's Avatar
      mrdjflood -
      Can someone please explain to me why my iPhone 4 with firmware 4.1 and JB with limera1n is untethered and if i update to 4.2.1 its no possible to get an untethered JB?
      thanks in advance.
    1. ricKKyblacKK's Avatar
      ricKKyblacKK -
      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.
      Id be very leery about jumping to the 4.2 from your 3.1.2...I did about 3 weeks ago using redsnOw (( 3.1.2 > 4.1 ))and its been REAL buggy ever since. Takes forever to load up text messages, contacts, etc. I'm wondering if the 4.2 will be the same.....so just be leery you may want to stay at 3.1.2 !
    1. Interloper's Avatar
      Interloper -
      Redsnow just crashes while uploading ramdisk on win7 for ipad. I was eating pizza. Will try on macbook.
    1. LearningMan's Avatar
      LearningMan -
      Thanks thazsar. That actually makes perfect sense.