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  • Downgrade from 1.1.1 to 1.0.2 POSSIBLE NOW!
    KMAC over at hackint0sh has found a way to downgrade from 1.1.1 to 1.0.2. Here's the skinny:
    • Start iTunes and plug in your iPhone which is running the 1.1.1 firmware.
    • Hold down the Sleep and Home button for 10 seconds. Allow the phone to power off, but keep holding down the buttons. After 10 seconds, let go of the Sleep button, but keep the Home button pressed until iTunes sees your iPhone. The screen on your iPhone should be displaying nothing right now.
    • iTunes will ask you if you want to restorea. Hold down Option or Alt, I forget which (Shift if you are in Windows), and click restore. When iTunes asks you what file you would like to restore from, navigate to your 1.0.2 folder. You may have to rename that file to .zip and uncompress it. It will begin to restore.
    • When it completes, you will get an error. The iPhone will display the yellow triangle on the screen. Leave iTunes open, and run AppTapp. This may give you an error, but you should see the "Activate iPhone" screen after.
    • Run AppTapp again. If the iPhone isn't being recognized, restart the computer and then run AppTapp for the second time.
    • Congrats! You now have 1.0.2 again! iNdependence and all other modding apps will now work.
    This has been verified with iTunes 7.4.3.1.

    Wiki here.

    hackint0sh

    UPDATE: Not confirmed yet, but for those having the "incorrect SIM" issue after dowgrading, try this (thanks, Doerr)

    Just turn off the phone, take out the SIM card, turn it on, and when its done put it back in.
    This article was originally published in forum thread: Downgrade from 1.1.1 to 1.0.2 POSSIBLE NOW! started by Kyle Matthews View original post
    Comments 238 Comments
    1. mikef's Avatar
      mikef -
      what arent you doing????
    1. jimmie geddes's Avatar
      jimmie geddes -
      I was having the same exact problems. I followed Engadget's video, and after I watched it I got my iPhone back to 1.0.2. You also need to run apptap. Watch the video, it helped me do it right.

      http://www.engadget.com/2007/09/29/i...ions-released/
    1. dotmotion's Avatar
      dotmotion -
      A friend of mine updated to 1.1.1 with his software-unlocked iPhone. He came to me to me to see if I could 'un-brick' it.

      I followed the steps posted in this thread, and after jailbreaking I inserted a non AT&T SIM and I was able to make calls. I didn't had to 're-unlock' it... I just turned it on and I was able to make calls (I'm in Mexico). The modem firmware checks with the one from 1.1.1 although I have installed 1.0.2

      I'm not sure why this happened, I just restored through iTunes, it came back with an error, then I used InDependence to for the Jailbreak and that was it.

      I'm very sure that I'm not getting charged for international calls, the phone recognizes the SIM card and the mexican carrier... anyone else had this luck?
    1. unknownentry's Avatar
      unknownentry -
      Good find!!! WORKS GREAT - Back to modding again until the 1.1.1 jailbreak is released!
    1. McGeeTM's Avatar
      McGeeTM -
      i gave up for 2nite, during the installing of apptap, about half way threw i kept receiving the same error, "cannot send file".... thats HALF WAY threw not all the way threw so i know thats not the error im suppose to get, any ideas?
    1. SpotEyes's Avatar
      SpotEyes -
      dear All Guys

      great job !!!!

      here are the detail info and pic for people who can read chinese.

      http://iphone4.tw/forums/viewtopic.php?t=60

      http://iphone4.tw/blog/2007/09/30/59/

      I hope this will help some people.
    1. yowiphone's Avatar
      yowiphone -
      Quote Originally Posted by STALKER View Post
      Shoot, so I can downgrade, but I can't re-unlock the phone?????? I jailbreaked again and re-started the unlocking process on this site, but then get stuck at the cyberduck part.
      Thanks.
      You need to delete your current password for iphone (If you have one) and in cyber duck for USER NAME: root PASSWORD: dottie
      your iphones IP adress and port 22 then search. THEN YOUR DONE!!
    1. sharpstyx's Avatar
      sharpstyx -
      Quote Originally Posted by SpotEyes View Post
      dear All Guys

      great job !!!!

      here are the detail info and pic for people who can read chinese.

      http://iphone4.tw/forums/viewtopic.php?t=60

      http://iphone4.tw/blog/2007/09/30/59/

      I hope this will help some people.
      why the hell are you listening to ABBA?

    1. yowiphone's Avatar
      yowiphone -
      Quote Originally Posted by zoidberg md View Post
      yowiphone.........

      Check your signature... (hint) (hint)
      Well yeah its a fact lol
    1. asifjahmed's Avatar
      asifjahmed -
      New to the forums, but have been reading since inception and have done a lot with my iPhone...

      Well, it looks like it is possible to downgrade the baseband after the restore to 1.0.2, thus giving the ability to re-unlock:

      I cannot personally confirm this, but it looks legit.

      http://www.hackint0sh.org/forum/showthread.php?t=9027
    1. drhundley's Avatar
      drhundley -
      Quote Originally Posted by yowiphone View Post
      Well yeah its a fact lol
      look one more time bro..
    1. amandej's Avatar
      amandej -
      i cant choose the iphone1,1_1-1 folder, it opens and give me all the different files help i cant get back to the triangle im just getting the itunes symbol and cord symbol HELP!
    1. Murfunit's Avatar
      Murfunit -
      Quote Originally Posted by asifjahmed View Post
      New to the forums, but have been reading since inception and have done a lot with my iPhone...

      Well, it looks like it is possible to downgrade the baseband after the restore to 1.0.2, thus giving the ability to re-unlock:

      I cannot personally confirm this, but it looks legit.

      http://www.hackint0sh.org/forum/showthread.php?t=9027
      The phone's he tried it on were never unlocked initially. And he was only able to get it to work on one (I think) of the six or so phones he bought.
    1. kec1er's Avatar
      kec1er -
      does this work with windows cause i tried a million times and it doesent work it doesnt give me option to choose which version i want it just starts restore
    1. asifjahmed's Avatar
      asifjahmed -
      Quote Originally Posted by Murfunit View Post
      The phone's he tried it on were never unlocked initially. And he was only able to get it to work on one (I think) of the six or so phones he bought.
      I wonder if another option would be to use the hardware part of the unlock method (By George Hotz) and then running bbupdater...

      I think i am going to save up and buy a second iphone to experiment with. I want to contribute to this community.
    1. Mookie469's Avatar
      Mookie469 -
      Now my phone has the permanent (yellow triangle) display. I have try to restore back to 1.1.1 with no luck, i have try to downgraded to 1.0.2 with no luck either. What do i do know? Any body? Maybe there is someone around the Virginia in the Portsmouth area that might be able to help me, that would be great.
    1. mikenificent's Avatar
      mikenificent -
      Good tutorial and easy to follow. Worked like a charm.
    1. sgammella's Avatar
      sgammella -
      How are people getting the gsm features. I have att and my phone is jailbreaked and i can use all the other features. Is there another way to get the gsm features without downgrading the baseband system or turbo sim
    1. billchase2's Avatar
      billchase2 -
      After looking this all over... I still have a question. Some people are talking about how they cannot send/receive calls after downgrading. Who does that concern? I have a legit contract with AT&T and have never unlocked my phone. I've simply used jailbreak and added 3rd party apps in the past. If I were to downgrade, would my phone calls work? I don't want to downgrade if it is going to screw up my calls because my iPhone is my only phone.
    1. xxjoebreadxx's Avatar
      xxjoebreadxx -
      Quote Originally Posted by billchase2 View Post
      After looking this all over... I still have a question. Some people are talking about how they cannot send/receive calls after downgrading. Who does that concern? I have a legit contract with AT&T and have never unlocked my phone. I've simply used jailbreak and added 3rd party apps in the past. If I were to downgrade, would my phone calls work? I don't want to downgrade if it is going to screw up my calls because my iPhone is my only phone.
      Yes, Everything should work fine for you. I have a legit conract with AT&T on one of my iphones. I had one phone that had 3rd party apps on it, and updated. Then I can back and downgraded and it works fine. As long as you have never unlocked,You should be good to go. Even if your not...you can awalys put the 1.1.1 back on there.