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  • Jailbreaking & Unlocking iOS 4 : What You Should Know
    Note: This Post will be udpated as news becomes available. Please share your experiences in this thread. It is highly suggested you do not update to iOS 4 right away. Please be patient.



    Today, as expected, Apple released iOS 4 to the public. But before you get too excited, there are some things you should know before updating to iOS 4. If you want to play Jailbreak with your iDevice, make sure you read through this.

    iOS 4 is compatible with the 3G, 3GS, the newest iPod Touch and iPhone 4. Those of you that have played with the GM release, the build number on this public release is exactly the same; 8A293. So as for changes since the GM there are none in this release.

    Update:
    Quote Originally Posted by bennyg View Post
    there are actually differences in the GM and public release. Notice no game centre in the public release? Also if you go to http://oo.apple.com to opt out of the iAd data collection stuff on the GM release it states your not on iOS4!

    Jailbreaking

    iPhone3GS & iPod3G owners (especially if you used Spirit for your first JB) should stay away from iOS4 for now

    Wizdaz has kept the community in the know, informing us that PwnageTool is currently being updated as we speak. PwnageTool 4.0 will support the iPhone 3G (with Pwnage exploit), iPhone 3GS and iPod Touch 2G (both with 24kPwn exploit). Keep in mind this means no support for the newer bootom. Remember the tethered days? If that was you, then you will need to wait until Spirit is updated or a new tool is updated for such.

    There is of course the Redsn0w option if you have a 3G, but stay away from any custom packages. The Dev-Team has written it well, and because of their credibility, here is exactly what they say

    We are working hard on a release to our tools that will jailbreak your device (or give you iOS 4 via the jailbreak train) and provide you with a carrier unlock.

    Until these tools are released you should hold off on updating your device until we have fully tested our tools with all the relevant devices.

    If you rely on hacktivation or a carrier unlock (ultrasn0w) then you should not upgrade until we have fully tested and released our tools.

    Don’t be tempted with unofficial PwnageTool/redsn0w bundles or releases, just check here or our team twitter for real time release information.

    Remember, we risk our devices so you don’t have to (but this time anyone who has made a mistake upgrading their baseband firmware at 3.1.3 or 4.0 should be OK real soon Now!
    iPhone Dev-Team
    WizDaz


    Unlocking iOS 4

    The iPhone Dev Team has released ultrasn0w 0.93 for unlocking your new iOS 4. Simply add the Cydia repo: repo666.ultrasn0w.com. This version of ultrasn0w will unlock basebands 04.26.08 thru 05.13.04. If your unsure, that means that ultrasn0w unlocks ALL basebands since iPhone OS 3.1. Even more specifically, 04.26.08, 05.11.07, 05.15.01, and 05.13.04. Remember to disable 3G on T-Mobile USA.

    So on the unlocking front, you're pretty much golden. However it's still recommend to wait just a little bit longer before making the plunge for iOS 4.

    iPhone Dev-Team
    MuscleNerd
    This article was originally published in forum thread: Jailbreaking & Unlocking iOS 4 : What You Should Know started by nickhesson View original post
    Comments 470 Comments
    1. brett_day's Avatar
      brett_day -
      Quote Originally Posted by Nips_19 View Post
      same thing happen to me click update with you phone connected then it should say 4.0 update, click to download then disconnect you phone to be on the safe side and let it download the update, then pwnage tool 4.0 will pick up the new ipsw file once its downloaded
      pwnage tool? i was just going to update to 4.0 then run redsnow with the other software i downloaded earlier on, should i still proceed like i was going to?
    1. Nips_19's Avatar
      Nips_19 -
      Quote Originally Posted by brett_day View Post
      pwnage tool? i was just going to update to 4.0 then run redsnow with the other software i downloaded earlier on, should i still proceed like i was going to?
      either way its up to you i prefer pwnage tool but if your already updating then use redsnow
    1. brett_day's Avatar
      brett_day -
      Quote Originally Posted by Nips_19 View Post
      either way its up to you i prefer pwnage tool but if your already updating then use redsnow
      ok cool thanks, it is already updating to 4.0, cannot wait to use redsnow to jailbreak this thing and get it running on tmobile via ultrasn0w
    1. adrian1480's Avatar
      adrian1480 -
      yea...think I'm going to downgrade to 3.1.2 and be done with it until I'm ready to sell my 3G iPhone.

      bottom line here is that it just doesn't run well.
      • Animations are slow
      • Applications open and close slowly.
      • Critical apps (well, critical for me) are currently incompatible (MyWi, to be specific)
      • Multitasking only works for 1 app that i care about (Pandora)
      • Folders are slow to open and close, though they're extremely handy.
      • Available memory is chronically low (never really more than 20-25MB free)
      • Startup takes around 130 seconds.
      • iBooks doesn't yet work with the jailbreak, and there's no guarantee that it will.

      I'd like to enjoy it...but the sum total of all of these things tends to make me think Apple was right in leaving some of these features out for the 3G. Just doesn't have the horsepower to do a fully-featured iOS4 well enough.

      sorry to be the bearer of bad news to those still trying to get this to work...but I'm as disappointed as anyone.
    1. brett_day's Avatar
      brett_day -
      okay in cydia now for the second time, it is asking me if i want to upgrade 2 essential upgrades, do i do the upgrades or ignore? i have not done anything else yet, i have just jailbroken
    1. wolverinemarky's Avatar
      wolverinemarky -
      Quote Originally Posted by brett_day View Post
      okay in cydia now for the second time, it is asking me if i want to upgrade 2 essential upgrades, do i do the upgrades or ignore? i have not done anything else yet, i have just jailbroken
      yes go ahead, and if it messes up use Rock it updated all but winterboard for me just fine. I did the Essential upgrade
    1. brett_day's Avatar
      brett_day -
      awesome everything seems to be working correctly, cannot wait to get this thing synced back up with my music and apps etc!

      BIG THANKS TO ALL FOR ALL OF YOUR HELP!
    1. RaiV3R's Avatar
      RaiV3R -
      Lol offtopic but I think I'm wasting more time in trying to get these freaking two boot screens to work on Pwnage Tool than i've ever taken in jailbreaking an iPhone.

      Its driving me NUTS!!! I've wasted about an hour here trying to make them work, they are below 100kb (50kb to be exact, have transparency) yet Pwnage Tool says they are not compatible. Grrr!

      Edit: Woo, finally got it! Had to downsize my image A WHOLE lot, it doesn't even look like what it's supposed to be, but it still looks awesome. The more colors you have, the harder it is for it to pass. It doesn't matter if its below 100k apparently.
    1. mbeezy81's Avatar
      mbeezy81 -
      Alright, I've had enough of IOS4 on my 3G, its waaaayy to laggy. My iPhone4 is sched to be delivered tomorrow.I'm just going to unlock my 3G, and downgrade back to 3.1.3, I'm giving it to my wife for her T-Mobile service and she doesn't no shi*t about firmware. Screw this!!!
    1. brett_day's Avatar
      brett_day -
      i'm not experiencing any lag issues on my 3g, am i just lucky? are the lag issues on a phone by phone basis or is it widespread?
    1. redraven's Avatar
      redraven -
      Hey guys, wondering if anyone can help me out...

      I did a clean restore (i always do) and installed 4.0 on my 3g. All went well. I then used redsn0w pointed at the downloaded ipsw and this seemed to be fine.

      Cydia reorganized and closed itself and then resprang. Now it opens and gets as far as the page asking if you are user, hacker etc. and resprings. Every time. I've redsn0wed again thinking it didn't install properly but that didn't help.

      Any ideas?

      EDIT you just have to make a selection really really fast before the respring...all good now. Apology for panic-post but maybe someone will need to know
    1. mbeezy81's Avatar
      mbeezy81 -
      Quote Originally Posted by brett_day View Post
      i'm not experiencing any lag issues on my 3g, am i just lucky? are the lag issues on a phone by phone basis or is it widespread?
      I've seen plenty of people saying the same thing. I thought is was because I added the multitasking and desktop background enabled, so i re-jailbroke and took them off but it still ran slow. It's not horribly slow but I've had my phone long enough to notice the difference. 3G just doesn't handle IOS4 good.
    1. jasonm253's Avatar
      jasonm253 -
      yep least we all agree this wasn't made for 3g and it kinda sucks...good old apple wanting an extra buck....dunno if wanna plunge and try and get the new iphone..might just get the 3gs..
    1. idigipunk's Avatar
      idigipunk -
      Quote Originally Posted by adrian1480 View Post
      yea...think I'm going to downgrade to 3.1.2 and be done with it until I'm ready to sell my 3G iPhone.

      bottom line here is that it just doesn't run well.
      • Animations are slow
      • Applications open and close slowly.
      • Critical apps (well, critical for me) are currently incompatible (MyWi, to be specific)
      • Multitasking only works for 1 app that i care about (Pandora)
      • Folders are slow to open and close, though they're extremely handy.
      • Available memory is chronically low (never really more than 20-25MB free)
      • Startup takes around 130 seconds.
      • iBooks doesn't yet work with the jailbreak, and there's no guarantee that it will.

      I'd like to enjoy it...but the sum total of all of these things tends to make me think Apple was right in leaving some of these features out for the 3G. Just doesn't have the horsepower to do a fully-featured iOS4 well enough.

      sorry to be the bearer of bad news to those still trying to get this to work...but I'm as disappointed as anyone.
      Thanks for the info
    1. n00neimp0rtant's Avatar
      n00neimp0rtant -
      Quote Originally Posted by idigipunk View Post
      Thanks for the info
      We have a thanks button for a reason
    1. oops1975's Avatar
      oops1975 -
      Just JB'ed 3G... Went from 3.1.2 to iOS4..worked flawlessly...I am gonna find someone in my office with t-mobile sim to make sure that it is unlocked.. thanks dev team and modmyi guys.. you are awesome.. I can't even imagine how much time, money, energy you spend to help us common folks...

      thank you from bottom of my heart...
    1. Achy's Avatar
      Achy -
      Got iOS4 on my 3G, jailbroke with redsn0w, and unlocked with ultrasn0w.

      SBSettings works, but don't try to open up processes as it'll crash your springboard.
      Multitasking works fine with the apps compatible with it.
      Do NOT even try the wallpaper function. It will slow down your phone a lot. I had to re-restore just to get rid of it.
      All the apps I've tried work (not going to list 50 apps here).

      Overall, I like it so far. The speed is not bad at all (can't really tell the difference) and no problems with the battery yet. The unlock works flawlessly so far.
    1. jasonm253's Avatar
      jasonm253 -
      so ur telling me what is slowing down everyone's iphone 3g is us clicking the check for wallpaers in redsnow? can anyone else confirm this?
    1. mbeezy81's Avatar
      mbeezy81 -
      ^^^ No, wallpaper may slow it down more, but it's still slow with a black background...the 3G just doesn't perform well with IOS4 in general. If you've jailbroked iPhones for a while u can tell a big difference.I even deleted all my apps from cydia off and it still sucked.
    1. DisturbedZen's Avatar
      DisturbedZen -
      Will we be able to unlock iPhone 3GS with Modem Firmware 05.12.01 while currently at 3.1.3?