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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. tewman's Avatar
      tewman -
      ios4 - iphone 2g any way to do this
    1. brett_day's Avatar
      brett_day -
      Quote Originally Posted by adrian1480 View Post
      just be sure to tell people their phones won't run like they did before. be sure to admit to them that the animations will be noticeably slower and choppy. tell them things will slow to a crawl if they don't police their multitasked applications.

      other than those things, yes, it runs fine. but those things do matter. especially the multitasking issues, as they slow the phone down quickly. it's not okay long-term. it's interesting for a day or two...but after awhile, it clearly becomes burdensome to have to worry about what's trying to multitask. backgrounder is the superior solution for 3G iPhones. without any doubt. and the laggy animations can be lived with, except that apps also now run slower.

      and yes, people DO have reasons to not tell the whole truth. people who think they have something that others want will often hide the fact that said coveted thing isn't perfect. you see it all the time from people who buy cars, then give glowing reviews in order to make themselves feel better. you see it from people who buy mediocre videogames, but suggest they're must-have titles. et cetera.

      As such, it is of absolutely no surprise that more people aren't simply telling the truth about multitasking on a 3G iPhone: the iOS4 implementation blows on 3G because of a lack of built-in RAM. it forces you to constantly be aware of it, creating a layer of concern for your 3G phone that you never had before now. Apple left the feature off of 3G's by default for a very clear reason.

      that's the truth. every other comment with regard to multitasking is just exaggeration or lack of real usage of it.
      so i am going to repost my short review of 0s 4 on the 3g. i posted this a few pages back, sure everyone has their own opinions and some might like the next person might not, now just because you do not like the performance, that does not mean everyone will dislike it. I suggest people try it for themselves and let them be the judge for themselves.

      so for those of you out there that are still on the fence in regards to upgrading to 4.0, maybe this will help you.

      I have been using 4.0 for about 12 hours now on T-Mobile and have had no real major issues with it on my 8gb 3g iphone.

      I have multitasking and wallpapers enabled and for the most part the phone runs pretty smooth. There is lag everyonce in a while, it happens mainly when you switch back to the main screen from an app. There can be some slight lag when using the on screen keyboard when you start typing a message but it soon catches up.

      I have had zero issues when it comes to running apps! all apps run just as fast as they did before on 3.1.2

      Multitasking is pretty cool and it runs well. It is nice to be able to switch from one app to another without going back to the main screen, it works well but there is some slow down but again nothing that would stop me from using it. If you want to close out apps just double tap the home button and hold your finger on one of the apps and you can select which ones to close.

      Wall papers are cool! I am not sure if these are the reason for some of the lag or not, i might try and jailbreak again with no wallpaper to see if it is the cause, the lag is there but it does not really bother me but it might bother others.

      I have not used cydia all that much, i never used it much before. I have downloaded sbsettings and it works great. YMMV on other apps from cydia or rock i think it will be trial and error for a while

      There is no doubt the 4.0 update pushes the 3g to the absolute limit but the phone is working well, everything functions as it should. Battery life honestly seems to have improved some, i will report back later on with more definitive findings though.

      I like the 4.0 update, if you can stand some lag every once in a while i think you will like it too! I hope this help you guys out there who are on the fence.

      Regards
      Brett Day

      Quote Originally Posted by mamirza View Post
      Please give steps to follow to upgrade to iOS4 with iTunes 9.2

      upgrade
      jailbreak
      unlocking etc.

      am having 3G blackra1ned, thanks
      1.download redsnow 0.9.5b5
      2.download the firmware 8A293 for iphone 3g
      3.connect your iPhone to your comp and update to 4.0 via iTunes
      4.once upgraded turn off your iPhone
      5.open Redsnow and browse to the 8A293 firmware
      6.decide if you want to keep multitasking and wallpapers on, make sure cydia is selected to be installed
      7.click next and follow the instructions on the screen
      8.when iPhone has rebooted go to Cydia, select manage, click on sources, select repo666.ultrasn0w.com and this will unlock your phone

      thats it, easy as 1.2.3

      regards
      Brett
    1. PentaMedia's Avatar
      PentaMedia -
      Still no good news for us with an MC iPod Touch 2G?
    1. devp93's Avatar
      devp93 -
      hey guys.

      just wondering...

      i updated to ios4 without reading posts about not upgrading when using spirit. once upgraded, 3g connection didnt work. i did a couple of restores and its back to normal on ios4 fw.

      when a 3gs new bootrom ios4 jb comes out, will i be able to use the packages that say dont use if jbed with spirit? asking because after the restores it freshened up the phone.

      thanks
    1. Nips_19's Avatar
      Nips_19 -
      Quote Originally Posted by devp93 View Post
      hey guys.

      just wondering...

      i updated to ios4 without reading posts about not upgrading when using spirit. once upgraded, 3g connection didnt work. i did a couple of restores and its back to normal on ios4 fw.

      when a 3gs new bootrom ios4 jb comes out, will i be able to use the packages that say dont use if jbed with spirit? asking because after the restores it freshened up the phone.

      thanks
      I think you will be fine one there is a official JB for the IOS4

      Im sure Geo Hot Pwned for life will do the trick when its released
    1. ScrubbyB's Avatar
      ScrubbyB -
      Anyone have IOS4 on a 2nd gen touch(non MC model)? If so how is it running I haven't seen anyone post any info about how it runs on it and would like to know if its just getting a bit of lag like the 3G IPhone or what any info would be appreciated~!!!
    1. moon#pie's Avatar
      moon#pie -
      I am on an IPT 2nd gen and it runs great with jailbreak and multitasking enabled. If you enable wallpapers it will make it lag for some reason, so don't do it.
    1. DmVinny's Avatar
      DmVinny -
      Brett obviously you do notbl use your phone that much. I constanstly switch apps whether it be safari, facebook, windows live, messages, etc. It runs slow and lags alot and this is without wallpaper. Anyone who can sit here and blatantly say there 3G works flawlessly with limited lag is either micromanaging the multiinstance or not runnin any apps.

      I as well as other experience lag just by clicking on a contact to make a phone call.

      Safari has a huge memory leak, 3.1.2 never had me use 40mb of memory just on safari.

      Multi instance like I said in multiple posts flawed.

      I look at it this way. How come I could run SMS/background and backgrounder and still have plenty of ram on 3.1.2. But ios4 with the two functions built in give me less then 10mb. Flawed!!!

      Oh and I been running it for 72 hours.

      Btw sorry for spelling. iPhone autocomplete coupled with lag.
    1. brett_day's Avatar
      brett_day -
      Quote Originally Posted by DmVinny View Post
      Brett obviously you do notbl use your phone that much. I constanstly switch apps whether it be safari, facebook, windows live, messages, etc. It runs slow and lags alot and this is without wallpaper. Anyone who can sit here and blatantly say there 3G works flawlessly with limited lag is either micromanaging the multiinstance or not runnin any apps.

      I as well as other experience lag just by clicking on a contact to make a phone call.

      Safari has a huge memory leak, 3.1.2 never had me use 40mb of memory just on safari.

      Multi instance like I said in multiple posts flawed.

      I look at it this way. How come I could run SMS/background and backgrounder and still have plenty of ram on 3.1.2. But ios4 with the two functions built in give me less then 10mb. Flawed!!!

      Oh and I been running it for 72 hours.

      Btw sorry for spelling. iPhone autocomplete coupled with lag.
      i use my phone all the time thanks, again it is just my opinion, sorry for having one, apparently it is illegal these days. To each their own, if you don't like it, then fine, others might like it
    1. DmVinny's Avatar
      DmVinny -
      It's not the point of not liking it, there are some new features that are great. But we also have to admit to the bad so it gets resolved otherwise we are stuck with it.

      You think Steve jobbs made his money living on a motto like "oh this is crap, but I will live with it". ?
    1. hotsammysliz's Avatar
      hotsammysliz -
      Hey Brett have you had any internet/tethering/MMS issues since upgrading it to iOS4 and what were your network settings before hand

      Thanks
    1. snowdweller's Avatar
      snowdweller -
      Just give me my mc131x 05.13.04 iOS4 3gs jailbreak already!!!!
    1. brett_day's Avatar
      brett_day -
      Quote Originally Posted by hotsammysliz View Post
      Hey Brett have you had any internet/tethering/MMS issues since upgrading it to iOS4 and what were your network settings before hand

      Thanks
      i have not not had any issues in regards to these features, what are your current settings?

      just wanted to shout out an update. there is a new version of redsn0w. It fixes the problem with ibooks. ibooks now works flawlessly.

      When downloading redsn0w, make sure you download 0.9.5b5-4
    1. pastorjared's Avatar
      pastorjared -
      Can't Wait for the Official Jailbreak for the ISO 4!
      Also can't wait for MyWi for the ISO 4
    1. tamsar2010's Avatar
      tamsar2010 -
      Hi everyone
      I cant seem to unlock my 3g iphone, i've tried ultrasn0w multiple times and keep getting no sim recognition. Had no problems hacktivating and jailbreaking.
      The phone was a gift so the only thing I can think of is maybe its still registered with AT&T...
      am trying to use it on T-mobile, any help would be appreciated
      thanks
    1. MJedi's Avatar
      MJedi -
      Quote Originally Posted by hotsammysliz View Post
      Hey Brett have you had any internet/tethering/MMS issues since upgrading it to iOS4 and what were your network settings before hand

      Thanks
      Quote Originally Posted by brett_day View Post
      i have not not had any issues in regards to these features, what are your current settings?

      just wanted to shout out an update. there is a new version of redsn0w. It fixes the problem with ibooks. ibooks now works flawlessly.

      When downloading redsn0w, make sure you download 0.9.5b5-4
      So you still have your tethering settings enabled AND it's working?

      I'm waiting for an answer on whether the tethering that we have on 3GS still works on iOS4. It's the only feature I have on my 3.1.2 3GS that is holding me back from upgrading to iOS4. I'm currently using the Tethering Patch 3GS from iFoneguide.

      Thanks!
    1. Inwood's Avatar
      Inwood -
      I used iOS 4 on my 3G for 1 day and went back to 3.1.3. The lag/choppiness on the phone was pretty much unbearable to me. I couldnt stand waiting 1-2 seconds for the phone to respond to my key strokes.

      Brett, how did you get multitasking working for the 3G on iOS 4? Apple specifically states that multitasking is not an available feature on the 3G.
    1. s1l3nt's Avatar
      s1l3nt -
      Quote Originally Posted by Inwood View Post
      I used iOS 4 on my 3G for 1 day and went back to 3.1.3. The lag/choppiness on the phone was pretty much unbearable to me. I couldnt stand waiting 1-2 seconds for the phone to respond to my key strokes.

      Brett, how did you get multitasking working for the 3G on iOS 4? Apple specifically states that multitasking is not an available feature on the 3G.
      by jailbreaking it
    1. DmVinny's Avatar
      DmVinny -
      You can jailbreak it with the option to turn it on, or you can edit one of the .plist files.. (don't remember it off hand).
    1. stownson5's Avatar
      stownson5 -
      Ok so I need some help since it's been a while since I last did a jailbreak on my phone. I have (2) iPhones both 3g with the 3.1 firmware. One is running on 5.11.07 and the other on 4.26.08

      I am wanting to unlock/jailbreak them and wanting to know the easiest way to do this? Should I find an unlock/jailbreak for the 3.1 or should I upgrade to the 4.0? Is there an unlock for the 4.0 yet. Also, please please please show me a link with step by step instructions as I am not very savy with all the lingo.

      THANKS