1. redneck1974's Avatar
    Sorry guy's and girl's, i found a step by step earlier and can't find it now I have a iphone 3g on vesion 4.2.1 and modem firmware 05.15.04. I need to unlock it to switch providers. I guess i need to jailbreak and unlock. can some one help me with the info. My head is sore from reading so much, just got confused and nervous. Oh and a question, does the sim card need to be removed before i begin, this is one thing i never read. thanks for the help. A trusted link would be appreciated
    01-16-2012 04:59 PM
  2. rdiddy_25's Avatar
    Have u read thru the 1st sticky on this page?
    01-16-2012 05:41 PM
  3. redneck1974's Avatar
    yes i have but it is a little hard to understand the lingo. I just heard about this 3 day's ago, i have but a dozen hours trying to figure this out so i don't kill my phone, or i should say my wife's phone. So from that sticky, do i upgrade from 05.15.04 to 6.what ever or just leave it and to i use redsnow? i had found a good step by step with pictures to help but i hit the wrong button and can't seem to navigate back to it.
    01-16-2012 06:16 PM
  4. Peligro911's Avatar
    Yes you have to download redsnow and the 4.2.1 Ipsw

    Jailbreak your 3G then after its done redo the same process and this time in redsnow only check upgrade baseband this will upgrade to 6.15.00
    This is not reversible and your iPhone will always have to be JB and you can not restore using iTunes to ever restore you will have to use a custom Ipsw

    After that's complete download ultrasnow in Cydia to unlock your phone.

    Also check out the jailbreak guide on

    Sent Into Orbit from my iPhone 4S using Tapatalk
    01-16-2012 07:29 PM
  5. redneck1974's Avatar
    thanks for the direction now to figure out the downloads and Ipsw. It does have to be jailbroke to unlock wright?
    01-16-2012 07:54 PM
  6. Peligro911's Avatar
    Yes you do that site has links to download everything you need

    Sent Into Orbit from my iPhone 4S using Tapatalk
    01-16-2012 09:58 PM