Results 1 to 2 of 2
Discuss [Problem] No signal/downgrade failed. at the iOS 3.x (iPhone OS 3.x) -; Hi! Just a few days ago my mate gave me a iPhone 3g(Black). I used ...
  1. #1
    Newbie Array

    Join Date
    Jul 2009
    Post Thanks / Like
    Rep Power

    Default [Problem] No signal/downgrade failed.

    Just a few days ago my mate gave me a iPhone 3g(Black).
    I used it on my network(Three G[]) and it worked fine... Just a day ago i gave the phone to my dad, he wanted to see it.
    Suddenly(he doesnt know why) the Apple logo came up and the phone went into 'no respond'.
    I then connected it to iTunes(latest) and it came up again, phew i thought...
    but! Since then it started playing up. No more signal. It just says 'no signal' or its just empty at the bar. (i tryed many simcards. O2(original), Tmob, three, Voda)
    I thought i just get it upgraded, it might work. Its now on FW 3.0.
    But it still has the same problem. (no signal and/or empty bar)
    I tought of unlocking/jailbreaking it...
    i downloaded:


    Source: Download QuickPWN iPhone App

    both of which i cant use.... Whenever it finishes 'extracting', an error msg comes up. Error 20.

    When i try
    iPhone1,2_3.0_7A341_Restore.ipsw, it works perfectly fine.
    I get to the normal Home screen and can use everything, exept the network.

    If theres a solution for the signal problem, i'd be happy to try it.
    I also dont mind Downgrading and Jailbreaking/unlocking it and try weather it works or not.

    If you guys can help me, it would be great!

    thank you!

    Some stuff:
    Version: 3.0 (7A341)
    Network: O2 4.0
    Model: MB496B
    Modem FW: 04.26.08

  2. #2
    Supporter Array cofi's Avatar

    Join Date
    Dec 2008
    Porto - Portugal
    Post Thanks / Like
    Rep Power


    1) Restore to OS 3.0 in itunes.
    2) Google for redsn0w and install it. Then run it in order to jailbrake your phone
    3) In Cydia add the folowing repo:
    4) Install ultrasn0w in Cydia
    5) Reboot the phone

    If you need a step-by-step tutorial go to iclarified. They have some good ones.



Similar Threads

  1. [1.1.2 OTB] Downgrade to 1.0.2 after failed HW unlock
    By meteor83 in forum iPhone "2G" (Rev. 1)
    Replies: 15
    Last Post: 05-12-2008, 07:17 PM
  2. Downgrade from 1.1.3 failed.
    By norwegianprep92 in forum iPhone "2G" (Rev. 1)
    Replies: 0
    Last Post: 01-30-2008, 12:51 AM
  3. Replies: 4
    Last Post: 01-30-2008, 12:02 AM
  4. no signal after downgrade
    By bostonba in forum General
    Replies: 0
    Last Post: 11-27-2007, 08:24 PM
  5. Problems with signal after Downgrade
    By Dash_2 in forum iPhone "2G" (Rev. 1)
    Replies: 4
    Last Post: 10-02-2007, 06:34 AM


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
All times are GMT +2. The time now is 09:40 AM.
twitter, follow us!