"Download Yellow sn0w to unlock Iphone 3g", yellowsn0w iPhone 3G unlock has been released! This is yellowsn0w version 0.9 and it's still in beta so use it at your own risk.

Note: You must upgrade to the latest 02.28 baseband (firmware 2.2) in order to use this unlock and also jailbreak with QuickPWN/PwnageTool and add Cydia/Installer.

Here is the iPhone 3G firmware 2.2 download link: click here

You can install yellowsn0w 3G unlock by using either Cydia or Installer, whichever you prefer. Below is a list of the repos/sources.

Note: The DevTeam also says that once you are done installing yellowsn0w through Cydia go back to the main menu on Cydia and restart your iPhone with the 3rd party SIM installed. Wait for the slide to unlock screen, and then wait 10-15 seconds. If you don't see your carrier name pop up you must remove your SIM, insert it again, and wait 10 seconds. (The DevTeam plans on elimintating this step)

Cydia Repos:

* http://apt9.yellowsn0w.com/

Installer sources:

* http://i.yellowsn0w.com/

Installation Instructions

1. Install BossPrefs and Yellowsn0w from Cydia

2. Disable everything in BossPrefs

3. Reboot your iPhone using BossPrefs

4. Wait 1.30 min when you see lockscreen

5. Take your sim out and insert it

6. Wait a moment

7. In settings turn on Fly Mode

8. Turn off Fly Mode

9. Your iPhone 3G should be working now!

Does this work? Post your results


  1. Anonymous  

    January 4, 2009 at 8:53 PM

    hai guys its not working just invalid sim?????????? plz help me mail me plz

  2. Anonymous  

    January 6, 2009 at 9:58 AM

    hurrrraay its working :)

  3. Anonymous  

    January 7, 2009 at 1:00 PM

    It's only for the iPhone 3G.?

  4. Anonymous  

    January 7, 2009 at 1:01 PM

    Quick Question - My phone is an unlocked and Jailbroken iPhone 3g, Model MB489J, Modem Firmware 02.11.07. I bought the phone in China and it works perfectly, but I have no idea how it was unlocked, I'm not using a turbosim and there are no marks on the case to indicate that it's been opened and had the insides tampered with. I want to upgrade to 2.2 but know this is a risky process. Any ideas on how I should proceed?

  5. Anonymous  

    January 7, 2009 at 1:02 PM

    yellowsn0w is only for iPhone 3G BASEBAND (SIMCARD BYPASS) unlocked for sim cards so it wont wotk on the ipod touch for now!!!

  6. Anonymous  

    January 7, 2009 at 1:02 PM

    OK. Seems that I have found a workaround for the signal problem.

    Here below is what I did.

    1. re-install yellowsn0w from cydia
    2. power off iphone
    3. sim card out
    4. power on iphone
    5. after it's back again, insert your sim card and wait for a few secs

    It's stable now.

    Hope it helps.

  7. Anonymous  

    January 10, 2009 at 6:45 AM

    It worked!!!!!!!!!!!!!!!

  8. Anonymous  

    January 15, 2009 at 1:05 PM

    much luv ma nigga

  9. Anonymous  

    April 1, 2009 at 6:40 AM

    hi guys!! I've downgraded from 2.2.1 to a 2.2....but my firmware is still a 02.30.03 not a 02.28!!!! and worst i can't get yellosn0w via cydia,each time i try to add it it says bad url....can anyone help me please??

  10. Anonymous  

    April 5, 2009 at 4:44 AM

    Hi, i got through all the steps and have cydia and installer, installed yellowsn0w using cydia then i turn all settings off in bossprefs and then power off with bossprefs.

    when i install sim card it doesnt do anything, i tried turning on fly mode then off again and after i do that i get 'invalid SIM'

    im not sure what im doing or have done wrong!

    Some help would be really appreciated.. anyone can hit me back at young_mike21@hotmail.com

  11. Anonymous  

    April 21, 2009 at 2:41 AM

    Hi friend,
    This is Nora from Star Telecom. We wish to inform you that we are manufacture professional in MAGICSIM Iphone 3g unlock SIM card at best price and high quality.
    Here just and excellent solution that make your Iphone work for any network, any carrier,, any SIM card.
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