Home » 3GS, 4.0, iPhone 3G S, jailbreak, unlock, Untethered Jailbreak

Simplest iPhone 3GS Untethered Jailbreak Released (any bootrom), Can be Unlocked with ease!

1 August 2010 28 Comments

For a list of important Cydia apps and more screenshots, go here. Visit this page if you have an iPhone 4.

There is not much to write about this time around (no PC or Mac limitation)! Jailbreaking is perfectly legal btw!

All you have to do is :

– Make sure your iPhone is activated. It is not possible without a valid iPhone SIM. If you don’t have one, we must wait until another tool is released.

– Make sure you sync your iPhone to iTunes. This is important, just in case you know!

– If your iPhone is activated, you are 60 seconds away from a jailbreak. Connect to WiFi and launch Safari on your iPhone.

– Type in ‘jailbreakme.com’ in Safari and swipe the ‘slide to jailbreak’ button.

– Sit back and watch the fun! It should all be over in few seconds/minute depending on your WiFi connection!

– Now launch Cydia and choose ‘user’ when prompted to choose user type.

– Search for ultrasn0w [with a zero] and install it. Reboot your iPhone and enjoy a jailbroken, unlocked iPhone 3GS!

Please donate to comex here!

Known issues (from @comex’s tweets):

  • MMS/Facetime issues for some. You have to restore from backup to fix this issue. [This is now resolved! For those who are facing problems, update Cydia and reset network settings. For those who used it before the fix, chmod 755 /private/var/mobile/Library; chmod 755 /private/var/mobile/Library/Preference then Reset Network Settings should do]
  • T-Mobile MMS issues : Adding http://beta.leimobile.com/repo/ in Cydia and installing their package should fix MMS issues for T-Mobile users.
  • If it hangs in the middle of the process at the purple screen, reboot your iPhone and try again.

p.s : I tested this on an iPhone 3GS 4.0 with the latest bootrom.


  • ned said:

    thank you all you are the best awesome work thank you ,thank you,thank you !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  • neeraj said:

    how to search for Ultrasnow using cydia … i have managed to jailbreak using jailbreakme.com but im unable to unlock the phone since the search results for untrasn0w gives no results …

  • Kiran said:

    Launch Cydia and tap search – type ultrasn0w with a zero…

  • Marcin Szatkowski said:

    Feels strange when no custom firmware is required any more… 🙂 (for now at least)

  • kkiran said:

    Yep, I am sure it will be blocked with 4.1 that is in beta already. Just like the last time!

  • trip69 said:

    I have a jailbroken/unlocked 3GS on fw 3.1.2, using tethered jailbreak.
    So basically I can update my 3GS on iTunes to iOS 4.0.1 and then jailbreak/unlock with the described steps?

  • Kiran said:

    Only if your iPhone is activated though. As long as you see the icons (homescreen), this will work.

  • dunpi said:

    one question….i got a iphone 3gs but i don't have any sim on the iphone,the iphone got the must active phone but i see the icons on the home screem jailbreakme will work????

  • Kiran said:

    As long as you can open Safari on your iPhone! So yes, it will work like a charm…

  • jouke said:

    weer vette shit, werkt top THANX

  • sara said:


    While I was trying to unlock my iphone,something went wrong so I tried deleting the Cydia App and it did not work so I went ahead and restored my phone to factory settings. Now my phone is not switching on, it has an apple logo on the screen. I tried holding both home button and on/off button, it doesn't seem to work. Please help

  • Kiran said:

    Make sure you turn your iPhone off and is disconnected from your computer. Now, while holding the home button, plug the iPhone back in. Now restore to stock iOS 4.0.1 and then jailbreak and unlock. You don't have to delete Cydia, just hide it. It is essential for unlock..

  • Superior said:

    Aww you bricked your iPhone. Basically its not going to work. If it dosent leave the apple logo and has a little loading circle and keeps restarting then you bricked it. Which means the software crashed and your iPhone is no longer able to be used. Take it to the Apple store and if they cant fix it then theyll replace it as long as there is no water damage to the phone. It happened to me a few months back with my 3G. they just replaced the phone cause iphone couldnt even recognize it.


  • How to Unlock iPhone 4, 3GS, 3G iOS 4.0.x for T-Mobile and other Carriers [ultrasn0w] | I Love my stOOpid iPhone said:

    […] Jailbroken iPhone 4 / 3GS,3G (it should be activated, that is a pre-req for online […]

  • iph said:

    WORK!!!! I try this ant its cool!

  • Aakash said:

    i got iphone 3gs, while jailbreaking it froze, i restored it using itunes but it also got updated. now its firmware has been updated to 4.0.2 and it is asking for the original sim which i don't have. kindly asist me to activate my phone .. 🙁

  • Kiran said:

    Unfortunately, there isn't a system in place to activate 4.0.2 iPhone 4 without the original SIM… We have to wait for more..

  • manDEEP said:


  • Kiran said:

    Just follow the steps illustrated in this post!

  • bryan said:

    how do i noe my phone is jailbreaker….

  • Jashan said:

    I am having iPhone 3GS 4.1can i jailbreak it using jailbreakme.com ?

    if no is there any way of jailbreaking it on iphonevno pc

  • Kiran said:

    jailbreakme.com won't work on 4.1 firmware. I am not aware of any other 'on phone' jailbreak. You need either a PC or Mac – it is simple and easy..

  • ryan said:

    how do i downgrade to 4.0.1

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  • Balaji said:

    This works perfect on a iphone 3gs running ios 4.0.1. Thanks a lot.

  • t said:

    what did i do wrong phone is says searching at the top where the carriers name is suppose to be.

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