Page 1 of 2 12 LastLast
Results 1 to 10 of 16
Discuss Downgrade From 4.6 to 3.9 Discovered? at the iPhone "2G" (Rev. 1) - Hackint0sh.org; ...
  1. #1
    Rookie Array

    Join Date
    Oct 2007
    Posts
    27
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    0

    Exclamation Downgrade From 4.6 to 3.9 Discovered?

    Latest update from frenchiphone:

    - 27/11 00:33GMT : mxweas annonce avoir pu downgrader un 4.6 en 3.9, c'est-à-dire remettre l'ancien bootloader sur un nouveau iPhone, en désoudant l'eeprom et en la flashant en 3.9. "Sous réserve"

    Google Trasnlation:


    - 27/11 00:33 GMT: mxweas announcement downgrade could have a 4.6 to 3.9, that is restoring the old bootloader on a new iPhone, désoudant the eeprom and the flash in 3.9. "Subject"

    Does this mean a method has been found to downgrade the bootloader?



  2. #2
    Respected Professional Array hquest's Avatar

    Join Date
    Nov 2007
    Location
    Jersey City, NJ / Curitiba, BRA
    Posts
    615
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    50

    Default

    Quote Originally Posted by Kayser Sose View Post
    Latest update from frenchiphone:

    - 27/11 00:33GMT : mxweas annonce avoir pu downgrader un 4.6 en 3.9, c'est-à-dire remettre l'ancien bootloader sur un nouveau iPhone, en désoudant l'eeprom et en la flashant en 3.9. "Sous réserve"

    Google Trasnlation:


    - 27/11 00:33 GMT: mxweas announcement downgrade could have a 4.6 to 3.9, that is restoring the old bootloader on a new iPhone, désoudant the eeprom and the flash in 3.9. "Subject"


    Does this mean a method has been found to downgrade the bootloader?
    ... "restoring the old bootloader on a new iPhone, unsoldering the eeprom"

    Yeah, by hacking hardware at this level, surely it can be done.

    EDIT:

    "The source comes from the IRC channel of the Dev Team Us" rofl and i missed that?!
    Last edited by hquest; 11-27-2007 at 04:32 AM.

  3. #3
    Professional Array

    Join Date
    Sep 2007
    Posts
    63
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    10

    Default

    "désoudant" means desoldered = he physically removed the NAND chip from the logic board to reflash the old bootloader... NEXT!

  4. #4
    Senior Professional Array ta_mobile's Avatar

    Join Date
    Sep 2007
    Location
    HaNoi - VietNam
    Posts
    120
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    23

    Default

    I dont think bootloader is in logic board man. Cos you can change the comm board with the old bootloader and can unlock.

  5. #5
    Senior Professional Array

    Join Date
    Nov 2007
    Location
    Sydney - Australia
    Posts
    125
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    13

    Default

    ouch, did I hear solder and desolder >_< then it ain't a feasible solution for the majority of us


  6. #6
    Advanced Array

    Join Date
    Aug 2007
    Posts
    40
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    0

    Default

    Quote Originally Posted by ta_mobile View Post
    I dont think bootloader is in logic board man. Cos you can change the comm board with the old bootloader and can unlock.
    i think its possible http://img132.imageshack.us/my.php?image=img0942lg5.jpg
    that what i mean to ask you from other port

  7. #7
    Advanced Array

    Join Date
    Aug 2007
    Posts
    37
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    0

    Default

    ok i have a simple question. i had a 1.02 iphone and i upgraded to 1.1.1 and it is unlocked and i have been using it for a while. then i decided to upgrade to 1.1.2 but i wasnt able to unlock so downgraded but no go. so i had to use the ibricker to downgrade to 1.0.2 . when i did this my bootloader was still 4.6 so still locked. so i tried the ieraser and loaded the 3.9 and it works. so what is this people talking about downgrade am i missing some thing or no. i have done this couple of time and it works fine. its late but i can post what i did 2maro.... let me know if i'm wrong plz...
    thank you

  8. #8
    Senior Professional Array crackn's Avatar

    Join Date
    Aug 2007
    Posts
    200
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    23

    Default

    Quote Originally Posted by ta_mobile View Post
    I dont think bootloader is in logic board man. Cos you can change the comm board with the old bootloader and can unlock.
    is it possible to change the comm board with an old 3.9 one and after all, change the imei from the comm board to match the imei from the iphone back cover?

    because i have 2 v4.6 bootloaders waiting and i have 2 comm boards from old 3.9 bootloaders removed from dead screen phones.

    i can change the comm boards but i need to change the imei to match the labels.


    cheers,

    cRACKn

  9. #9
    Advanced Array

    Join Date
    Aug 2007
    Posts
    40
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    0

    Default

    Quote Originally Posted by crackn View Post
    is it possible to change the comm board with an old 3.9 one and after all, change the imei from the comm board to match the imei from the iphone back cover?

    because i have 2 v4.6 bootloaders waiting and i have 2 comm boards from old 3.9 bootloaders removed from dead screen phones.

    i can change the comm boards but i need to change the imei to match the labels.


    cheers,

    cRACKn
    that possible to change the COMM's board from 3.9 to 4.6,but the IMEI will not mark,you need the change the back cover has an IMEI too.coz the IMEI is in COMM's board.Done couple of them
    Last edited by 7777; 11-27-2007 at 06:39 AM.

  10. #10
    Senior Professional Array crackn's Avatar

    Join Date
    Aug 2007
    Posts
    200
    Post Thanks / Like
    Downloads
    0
    Uploads
    0
    Rep Power
    23

    Default

    Quote Originally Posted by 7777 View Post
    that possible to change the COMM's board from 3.9 to 4.6,but the IMEI will not mark,you need the change the back cover has an IMEI too.coz the IMEI is in COMM's board.Done couple of them
    if i change the back cover, imei will be correct but serial will be wrong!! not work for me.

    i know that i can change the comm boards and if the 3.9 BL isnt checking for signed code, in theory, you can change imei too cause imei is on baseband. and you can execute unsigned code on 3.9. just need to know where is the imei's address at baseband.

    but its possible.


    cheers


 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. New security flaw in iPhone discovered
    By anupkm in forum General
    Replies: 1
    Last Post: 12-01-2008, 05:55 PM
  2. MacNN: Vulnerability discovered in QuickTime 7.5.5
    By hackint0sh in forum Latest Headlines
    Replies: 0
    Last Post: 09-18-2008, 04:00 PM
  3. i discovered how to screenshot on 2.0.2
    By seseberg in forum General
    Replies: 12
    Last Post: 08-28-2008, 06:18 PM
  4. Replies: 2
    Last Post: 03-20-2008, 10:36 PM
  5. Replies: 114
    Last Post: 10-09-2007, 10:24 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin®
Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.
Search Engine Friendly URLs by vBSEO
(c) 2006-2012 Hackint0sh.org
All times are GMT +2. The time now is 04:05 PM.
twitter, follow us!