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  1. epicbored's Avatar
    I'm currently using a 3gs with a new bootrom. Right now it's still using a 3.1.2 tethered jailbreak from blackra1n. I want to upgrade to firmware 4.0+ or at least make it untethered. So basically I want to rejailbreak it.

    The version right now is
    -3.1.2 (7D11)
    -Model is MC121ZP
    -Modem firmware is 05.11.07.

    This device has SHSHs on file for iPhone OS/iOS:
    -3.1.2
    -3.1.3
    -4.0
    -4.0.1.

    I want to rejailbreak it so that it's at least untethered and I also want all the apps backed up. I read something about aptXXXX (Can't remember the name) and something about tiny umbrella ? But when I went to the site it said: Apple has stopped signing 4.0.1 and 3.2.1. So can I still upgrade to my firmware to 4.0 ? So can someone give me some clear instructions on how to do this ?
    Thanks ^^
    2010-08-23 07:06 AM
  2. Simon's Avatar
    http://modmyi.com/forums/general/725...e-restore.html
    Check here on how to use tiny umbrella. You should be fine since you have SHSH for 4.0 and 4.0.1. You probably shouldn't back up your jailbroken apps since some may not be compatible with 4.0. It is safer to just reinstall them and check compatibility with 4.0
    2010-08-23 01:06 PM
  3. epicbored's Avatar
    I'm trying to follow your instructions but there's seems to be a problem.Right now I can only get the 4.02 os and nothing more. My cydia says I have what I listed above though. When I clicked advanced options, I only had one option for the 3gs and that was 4.02. I see the other os like 4.01, 3.1.3 but they are for iphone 4 and ipod 2g ? I'm sorta stuck now. Help ? Thanks ^^

    Edit: Nevermind I got the shsh stuff. Now I'm on the firmware process. So do I download 3.1.2 b/c I'm 3.1.2 and how come theres no 4.01 ? Thanks ^^
    Last edited by epicbored; 2010-08-24 at 08:51 AM.
    2010-08-24 06:44 AM
  4. Simon's Avatar
    You would download 4.0 if you want to go to 4.0. They haven't added 4.0.1 yet if you want that one just google iphone firmwares and you should find plenty of sites that have that one to download.
    2010-08-24 12:37 PM
  5. epicbored's Avatar
    You would download 4.0 if you want to go to 4.0. They haven't added 4.0.1 yet if you want that one just google iphone firmwares and you should find plenty of sites that have that one to download.
    Thanks a lot for your help My 3gs is now on 4.01 and also jailbroken. Thanks for your help, it was really appreciated ^^
    2010-08-24 02:23 PM
  6. Simon's Avatar
    Not a problem, glad you got it working
    2010-08-25 07:03 PM
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