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  • HowTo: Jailbreak iDevices Untethered (and preserve iPhone Baseband) with PwnageTool 4.2


    Step 1: Download PwnageTool 4.2 here. Also Download the appropriate 4.2.1 firmware bundle (available from Apple). For the walkthrough I used an AT&T iPhone 4.

    Step 2: Open PwnageTool and click 'Expert Mode' at the top, then click the device you'd like to jailbreak.



    Step 3: Click "Browse for IPSW and browse for the firmware bundle you downloaded (should be firmware 4.2.1)



    Step 4: Click 'General' and select functions as needed.
    • 'Activate the phone' - Hacktivates the phone if previously unlocked
    • 'Enable baseband update' - Performs the baseband update (DO NOT CHECK THIS IF YOU RELY ON A ULTRASNOW UNLOCK)
    • There are options to re-enable functionality, which are specifically for the iPhone 3G. If you need them, check them off.



    Step 5: Click the arrow to apply the changes.

    Step 6: Install custom packages and cydia sources as needed, then click build to save your custom IPSW file, you may be asked to enter your Mac OS user password.



    Step 7: When prompted, connect your device via USB and follow the instructions for entering DFU mode.

    Step 8: Open iTunes. iTunes will tell you it has detected a device in recovery mode. IMPORTANT: PRESS OPTION AND CLICK RESTORE. Do not simply press restore, this will upgrade your device to stock 4.2.1, and WILL upgrade your baseband (which is irreversible). A dialog box will open and allow you to choose the firmware bundle to restore with. Choose the custom created bundle.

    Step 9: Wait for the restore to complete, and enjoy your untethered jailbreak! Unlockers on an unlockable baseband can simply install ultrasn0w and unlock. Enjoy!
    This article was originally published in forum thread: HowTo: Jailbreak iDevices Untethered (and preserve iPhone Baseband) with PwnageTool 4.2 started by Matt Savoca View original post
    Comments 154 Comments
    1. eddietah's Avatar
      eddietah -
      Thanks for sharing
    1. incanzable's Avatar
      incanzable -
      hello everyone, i have a 3g iphone 4.0.1 jailbroken, can i upgrade to 4.2 in itunes an rejailbreak ? if i can please tell me how to do the jailbreak, sorry but im new on this.
      thank you & have a good night :-)
      p.s. this tutorial its seems easy to follow should i go with it?
    1. agitcom's Avatar
      agitcom -
      i have 3gs old bootrom 3.1.2 bb 5.11.X - i am ready to upgrade to 4.2.1 - unlock is very import - 3gs no longer with ATT but still have the att sim card - if i uncheck activate phone in PT 4.2 will that update the bb? i want to use the old att sim to activate the 3gs to avoid battery problem - does PT 4.2 upgrade bb or no matter what happen will PT never upgrade the bb - thanks
    1. Simon's Avatar
      Simon -
      Pwnage tool 4.2 will not update the baseband no matter which you pick.
    1. incanzable's Avatar
      incanzable -
      thanks if u reply my last post, this is what happened;
      i did upgrade to 4.2.1 and then tried to jailbreak whit greenpoison rc6-1 but i couldnt do it, i couldnt pass the firs step which is dfu mode Then a read that i must upgrade and restore so i did a restore, what i get is my phone in 'only emergency calls' I got it out of sos
      so know i dont know what to do
      if anyone can give me a suggestion what i need to do please!
    1. Simon's Avatar
      Simon -
      Quote Originally Posted by incanzable View Post
      thanks if u reply my last post, this is what happened;
      i did upgrade to 4.2.1 and then tried to jailbreak whit greenpoison rc6-1 but i couldnt do it, i couldnt pass the firs step which is dfu mode Then a read that i must upgrade and restore so i did a restore, what i get is my phone in 'only emergency calls' I got it out of sos
      so know i dont know what to do
      if anyone can give me a suggestion what i need to do please!
      You need to activate it with a official carrier sim card or hactivate it with redsnow.
    1. agitcom's Avatar
      agitcom -
      Thanks for your reply ok upgrade 3gs to 4.2.1 with BB 5.11.7 activate 3gs using old not in service ATT sim now when i reboot i get this message

      waiting for activation
      this maytake sometime

      Thank
    1. Simon's Avatar
      Simon -
      That's fine. You will get that message until the first time you get signal.
    1. incanzable's Avatar
      incanzable -
      x98car thank you for helping me out. I do have a official sim car whit att. I'm just trying to jailbreak after my upgrade to 4.2.1 fw 05.15.04. I do not unlock.
      p.s. My phone it's working fine now but I want to jailbreak to use MiWi
    1. agitcom's Avatar
      agitcom -
      Quote Originally Posted by x98car View Post
      That's fine. You will get that message until the first time you get signal.
      x98car thank you
    1. Simon's Avatar
      Simon -
      Quote Originally Posted by incanzable View Post
      x98car thank you for helping me out. I do have a official sim car whit att. I'm just trying to jailbreak after my upgrade to 4.2.1 fw 05.15.04. I do not unlock.
      p.s. My phone it's working fine now but I want to jailbreak to use MiWi
      Just use redsnow 0.9.6rc8 then
    1. F_I_4_O's Avatar
      F_I_4_O -
      Hi, I have a jailbroken iphone 4 on 4.1 bb 2.10.4 and I tried to upgrade to 4.2.1 with pwnagetool 4.2 on my mac. Everything was fine, I created a custom firmware, entered dfu mode and when i tried to option-restore iTunes gave the following error message: "The iPhone "iPhone" can not be restored because the firmware file is not compatible." So I'm stuck in dfu/restore mode and don't know what to do, any help please?
    1. Simon's Avatar
      Simon -
      Quote Originally Posted by F_I_4_O View Post
      Hi, I have a jailbroken iphone 4 on 4.1 bb 2.10.4 and I tried to upgrade to 4.2.1 with pwnagetool 4.2 on my mac. Everything was fine, I created a custom firmware, entered dfu mode and when i tried to option-restore iTunes gave the following error message: "The iPhone "iPhone" can not be restored because the firmware file is not compatible." So I'm stuck in dfu/restore mode and don't know what to do, any help please?
      You normally get that error if you are using the wrong firmware for your device. For iPhone 4 the firmware should start iPhone3,1
    1. F_I_4_O's Avatar
      F_I_4_O -
      Quote Originally Posted by x98car View Post
      You normally get that error if you are using the wrong firmware for your device. For iPhone 4 the firmware should start iPhone3,1
      yeah i guess this is the issue because the firmware i used is this iPhone2,1_4.2.1_8C148a_Restore. so what should i do now? should i repeat all the steps with the correct firmware without the ones to make enter dfu mode and then use the correct firmware for the restore in iTunes?
    1. Simon's Avatar
      Simon -
      Download the right firmware for your device
    1. rwrobin01's Avatar
      rwrobin01 -
      I've read tons and watched videos. Some of you I recognize from other mod-sites. I've put numerous hours into my device. I have a JB(Limera1n) iPhone 4, 4.1, baseband 02.10.04(ATT). I want to upgrade to 4.2.1, as well as unlock without losing my cydia packages, add-ons, customizations and tweaks. I'm using Windows. Please advise. Thx!

      I never did anything with Blobs.
    1. F_I_4_O's Avatar
      F_I_4_O -
      Well alright I managed to JB my device but now when I try to open up cydia I can't. It begins to load and then closes.. Can I fix this?
    1. DarkBeam's Avatar
      DarkBeam -
      Thanks!
    1. lukasss's Avatar
      lukasss -
      After this jailbreak on my IP4, i have no signal at all...been jailbreaking since the OG iphone and have never had this problem.

      Anyone have the same exp?
    1. 3gs_16gig's Avatar
      3gs_16gig -
      i have a question about unlocking an iphone4 with 03.10.01 firmware if you or someone message me i would appreciate it