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Thread: All the Rules for Downgrading your iPhone 3GS

  1. #61
    My iPhone is a Part of Me Madman604x's Avatar
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    hi Jumper14

    if you havn't got your ECID's for 3.0 stored on Cydia LAST week, you're not ever going to.

    That's the bottom line.

    Therefore, you can never go back to 3.0 IF you have to upgrade to 3.1.

    3.1 is the lowest for you now, should you ever have to flash your firmware/restore your phone.



    what you can do now is use the "firmware umbrella to get your ECID blobs for 3.1 so that you can still Jailbreak, should Apple stop allowing 3.1 firmware (which they will, as its the last unlockable FW, it seems).

    so get your "00.shsh" files from "umbrella" and protect yourself now.

    you can also get your ECID's stored for 3.1 via Cydia as you are already Jailbroken. do both to be safe
    Last edited by Madman604x; 2009-09-26 at 12:34 AM.

  2. #62
    i'm jailbroken on 3.0.1, but i don't have my ECID "on file" with cydia...i haven't upgraded to 3.1...i think you misunderstood my previous post Madman604x, i hope u understand what i m trying to say...still waiting for an answer...

    thank you in advance!!!

  3. #63
    My iPhone is a Part of Me Madman604x's Avatar
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    all you need to do is run the firmware umbrella OR register through Cydia. both will give you ONLY 3.1 SHSH blobs as anything else is now invalid.

    you can try to register your 3.0.1 but you will recieve only 3.1

    make sense? or am i still misreading?

  4. #64
    jumper14, Apple stop signing for anything before FW3.1 now, so it doesn't matter what FW you're on right now(even if it's a 1.0), the only SHSH blobs you can get at this moment is 3.1.

  5. #65
    OK Guys,

    i understand that apple has stopped signing anything other than 3.1.

    Now, what i'm asking is... i'm on 3.0.1 and i want to stay on 3.0.1 for now as i don't need to restore at this point.

    But just to be safe i want to get my ECID "On file" with cydia for 3.1.

    So the BIG QUESTION is, right now, Can i get my ECID "On File" without restoring to 3.1?

    If so, then please tell me how....

    Any help is deeply appreciated...

    Thanks in advance...

  6. #66
    How do you get the carrier signal back after the downgrade? I'm on AT&T and successfully downgraded to both 3.0 and 3.0.1. But had NO cell service.

  7. #67
    jumper14, since you said your phone is jailbroken, so I believe you have access to Cydia. So now go in Cydia and scroll to the bottom and click the icon "Make life easier"(or something similiar) to have your ECID hash by Cydia.

    Or alternately, you can use the umbrella program as Madman604x suggested, which there's plenty of instruction through out this forum.

  8. #68
    To the masters...i have a problem, hope you can solve it.

    Before i tell you my problem, i have scoured all the forums and googled alot for the solution to my problem. Didnt work, hence i am posting it here now.

    I have iphone 3gs, using OS 3.0, Jailbroken and unlocked. I did "erase data and settings" (I know i am very stupid)...but i did it.

    Now the phone is stuck on the iphone logo and looping reboot for 24 hrs or so. I am trying to do a restore of the same firmware using iTunes, but i get the message "This firmware isnt eligible for this iPhone".

    Now after changing the hosts file with sauriks server address, i checked using CMD prompt, i pinged gs.apple.com and was pinging with sauriks server address. So i thought perfect. But then opened iTunes again, and tried to do the restore, and i still get the same message that "this firmware isnt eligible for this iphone".

    I have even restarted my pc , but still the same.

    I need help please.. Thank you

  9. #69
    i have a 3gs with 3.1 FW that was on it by deliverance. so i'm screwed without even doing something.

    but as i wanted to jailbreak and unlock it before i was buying the iphone i'm right now pretty sad about the fact that everyone is saying "you'll NEVER be able to unlock" as in fact i twittered with some of the known coders and they said that they will work on it. in my non-pro opinion something like "fuzzyband" could also maybe somewhen downgrade the 05.11.07 baseband.

    and then i'd be very happy ;D

  10. #70
    U can't downgrade ur bb until you jailbreak.

  11. #71
    yeah that's clear but as far as i know a jailbreak will be out in the next time.

  12. #72
    I have an Apple iPhone 3GS that states on Cydia that the device has SHSHs on file for iPhone OS: 3.1.2. I changed the signature server as recommended by Jay Freeman of Saurik through the Terminal App on utilities to 74.208.10.249 gs.apple.com. This was done on my MAC Book Pro with Mac OS 10.6.2. This is the computer that I use to connect my iPhone with iTunes. I think that I did the procedure correctly, however my question to anyone out there is: How do you know if the information went into the computer operating system correctly, and is there a way to check?

  13. #73
    It should say at the top of the screen when you open Cydia

  14. #74
    Quote Originally Posted by mskreind View Post
    I think that I did the procedure correctly, however my question to anyone out there is: How do you know if the information went into the computer operating system correctly, and is there a way to check?
    Open Terminal, type ping gs.apple.com and hit enter/return. You should see:
    "PING gs.apple.com (74.208.10.249): 56 data bytes
    64 bytes from 74.208.10.249: icmp_seq=0 ttl=50 time=54.510 ms
    64 bytes from 74.208.10.249: icmp_seq=1 ttl=50 time=56.431 ms"

    If it is resolving to a an IP other than 74.208.10.249, you didn't enter it right. (hit control+c to stop the pings.)

  15. The Following User Says Thank You to jet66 For This Useful Post:

    mskreind (2010-02-10)

  16. #75
    Jet 66
    Thanks for your response. Below is what I received when I entered your instructions. How do I correct this error?

    Last login: Tue Feb 9 18:04:31 on ttys001
    Mikes-MACBOOK-PRO:~ mskreind$ ping gs.apple.com
    PING gs.apple.com.akadns.net (17.151.36.30): 56 data bytes
    64 bytes from 17.151.36.30: icmp_seq=0 ttl=235 time=149.463 ms
    64 bytes from 17.151.36.30: icmp_seq=1 ttl=235 time=140.670 ms
    64 bytes from 17.151.36.30: icmp_seq=2 ttl=235 time=140.909 ms
    64 bytes from 17.151.36.30: icmp_seq=3 ttl=235 time=136.774 ms
    64 bytes from 17.151.36.30: icmp_seq=4 ttl=235 time=145.096 ms
    64 bytes from 17.151.36.30: icmp_seq=5 ttl=235 time=142.211 ms
    64 bytes from 17.151.36.30: icmp_seq=6 ttl=235 time=129.856 ms
    64 bytes from 17.151.36.30: icmp_seq=7 ttl=235 time=132.392 ms
    64 bytes from 17.151.36.30: icmp_seq=8 ttl=235 time=137.062 ms
    64 bytes from 17.151.36.30: icmp_seq=9 ttl=235 time=133.030 ms
    64 bytes from 17.151.36.30: icmp_seq=10 ttl=235 time=139.402 ms
    ^C
    --- gs.apple.com.akadns.net ping statistics ---
    11 packets transmitted, 11 packets received, 0.0% packet loss
    round-trip min/avg/max/stddev = 129.856/138.806/149.463/5.517 ms

  17. #76
    Quote Originally Posted by mskreind View Post
    Jet 66
    Thanks for your response. Below is what I received when I entered your instructions. How do I correct this error?
    When you edit the host file, make sure you are using the sudo nano command in Terminal, not text edit. (You get that if you use the 'open' command.) After you add it, be sure to hit control+o, then hit 'enter/return,' to save, then control+x to exit. The first time I did it, I must have missed the enter/return key and hit shift instead, I had the same result you did. Redid it, made sure to hit 'enter,' and it worked. You can always open the /etc/hosts file afterward, to make sure it changed.

    If you have used iTunes to update since your last reboot, you may need to flush the dns cache. I don't know those commands offhand (pretty new to Mac, myself) but I have seen them in a few posts on this subject.
    Last edited by jet66; 2010-02-10 at 12:24 AM.

  18. #77
    Jet 66
    This is what I entered below. I hit control-o and enter and control X to exit. What do I do with the dialogue at the bottom of the screen? Do I ignore it and close the application or is there something else that I need to do?

    ##
    # Host Database
    #
    # localhost is used to configure the loopback interface
    # when the system is booting. Do not change this entry.
    ##
    127.0.0.1 localhost
    255.255.255.255 broadcasthost
    ::1 localhost
    fe80::1%lo0 localhost
    74.208.10.249 gs.apple.com

    File Name to Write: /private/etc/hosts
    ^G Get Help ^T To Files M-M Mac Format M-P Prepend
    ^C Cancel M-D DOS Format M-A Append M-B Backup File

  19. #78
    Quote Originally Posted by mskreind View Post
    File Name to Write: /privat/etc/hosts
    ^G Get Help ^T To Files M-M Mac Format M-P Prepend
    ^C Cancel M-D DOS Format M-A Append M-B Backup File
    That is what you should see after ctl+o. It is at that point where you would hit 'enter,' and it should change to something like '11 lines written.' Then ctl+x exits that mode, back to your normal prompt.

  20. #79
    To Jet66

    That is not what has happened. At the bottom of the screen, there is a space to write a file name after /private/etc/hosts. Do I write anything at that point? I hit enter and the screen asks me if I want to file under a different name. If I hit no it goes back to the screen I showed you before. If I hit yes it took me back to the normal prompt. Should I flush the DNS Cache? I read that if you enter $ dscacheutil -flushcache the host file changes take immediate effect.

    To Jet66

    Success!!

    Last login: Tue Feb 9 18:05:59 on ttys000
    Mikes-MACBOOK-PRO:~ mskreind$ sudo nano /private/etc/hosts
    Password:
    Mikes-MACBOOK-PRO:~ mskreind$ ping.apple.com
    -bash: ping.apple.com: command not found
    Mikes-MACBOOK-PRO:~ mskreind$ ping gs.apple.com
    PING gs.apple.com (74.208.10.249): 56 data bytes
    64 bytes from 74.208.10.249: icmp_seq=0 ttl=54 time=128.294 ms
    64 bytes from 74.208.10.249: icmp_seq=1 ttl=54 time=131.463 ms
    64 bytes from 74.208.10.249: icmp_seq=2 ttl=54 time=114.843 ms
    64 bytes from 74.208.10.249: icmp_seq=3 ttl=54 time=116.561 ms
    64 bytes from 74.208.10.249: icmp_seq=4 ttl=54 time=108.717 ms
    64 bytes from 74.208.10.249: icmp_seq=5 ttl=54 time=99.287 ms
    64 bytes from 74.208.10.249: icmp_seq=6 ttl=54 time=112.500 ms
    64 bytes from 74.208.10.249: icmp_seq=7 ttl=54 time=105.292 ms
    ^C
    --- gs.apple.com ping statistics ---
    8 packets transmitted, 8 packets received, 0.0% packet loss
    round-trip min/avg/max/stddev = 99.287/114.620/131.463/10.222 ms
    Mikes-MACBOOK-PRO:~ mskreind$
    Last edited by mskreind; 2010-02-10 at 01:08 AM. Reason: Automerged Doublepost

  21. The Following User Says Thank You to mskreind For This Useful Post:

    jet66 (2010-02-10)

  22. #80
    Quote Originally Posted by mskreind View Post
    Success!!
    I don't know about it asking if you wanted it under another name, mine didn't do that. Maybe someone better versed in Unix would know, but that is a bit out of my experience. Congrats on getting it to work, though.

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