Up until now, RedSn0w 0.9.6 beta 1 only worked on Mac, but the Dev Team just updated the infamous RedSn0w jailbreak which is now compatible with Windows. This step by step guide and tutorial will show you how to jailbreak your iPhone 3G 4.1 using RedSn0w for Windows.

It’s important to note that if you’ve already updated to iOS 4.1 you will not be able to unlock your iPhone. If you do need to unlock and if you’re not on iOS 4.1 yet, I suggest you wait for the release of PwnageTool, which will allow you to update to 4.1 while preserving the baseband, thus enabling you to use UltraSn0w to unlock.

This tutorial is for the iPhone 3G only. If you have an iPhone 3GS 4.1 that you want to jailbreak, you’re going to have to wait from Comex’s next jailbreak. If you have an iPhone 4 on 4.1, you will have to wait until Sunday for the release of GreenPois0n.

The Mac version of this tutorial can be found here. This being said, here is how to jailbreak your iPhone 3G 4.1 with RedSn0w…

Step 1: Make sure you are running the latest version of iTunes (iTunes 10).

Step 2: Download iOS 4.1 for iPhone 3G and RedSn0w 0.9.6 beta 1 for Windows to your desktop from our iPhone downloads section.

Step 3: Update your iPhone to iOS 4.1 via iTunes.

Step 4: Launch RedSn0w and click “Browse”. Look for the firmware 4.1 you downloaded to your desktop in step 2. Click Next. RedSn0w will now “prepare jailbreak data”.

Step 5: A window with 8 different options will be offered to you. Make sure to at least select “Install Cydia”. You may select other options as well, depending on your needs. If you choose to enable multitasking, know that it will most likely slow down your iPhone.

Step 6: Follow the onscreen instructions by turning off your iPhone and clicking the “Next” button. We will now put your iPhone in DFU mode. Again, follow the onscreen instructions for that: hold down the home and power button together for 10 seconds. After 10 seconds, release the power button while still holding the home button until your iPhone reboots.

Step 7: RedSn0w will now be working its jailbreak voodoo on your iPhone. Sit tight. Your iPhone will reboot once done.

Done! This whole process should just take a few minutes. After that, you should see the Cydia icon on your springboard.

If you have any question or comment, please feel free to ask in the comments section below.

  • hotshot

    guys how to find out the firmware??? the iphone 3g i got from my friend. but no idea which firmware to jailbreak it.. could u help me????

  • z

    i follow this guy, it seams good, though after 30 minutes, the screen goes black on the iphone and u wonder whats going on, so how long should i wait for this ? lol

  • Fashan

    i did the same proc… but i don’t have cydia on my phone

  • mike

    i keep getting stuck on uploading ramdisk. it just sits there for a long time. I have the right firmware. what should i do?

  • Rafaela Capotorto

    Estou desesperada!! fiz tudo direitinho mais meu iphone nao sai da tela com o usb e o itunes!!!
    ja tentei ate com o tinyumbrella mais nada, nada mesmo… por favor alguem me ajudaaaaa

    • Rodrigo

      Formata o iPhone

  • Atte Pohjanmaa

    go: http://www.felixbruns.de/iPod/firmware/

    You can download there any iphone/ipod touch firmware for free here.

    1. connect your iphone or ipod touch to itunes
    2. got to restore button and press shift and then click restore.
    3. select your iphone/ipod touch firmware (what you want to install in your phone/ipod touch
    4. click “open” and itunes should begin downgrading.
    (your iphone/ipod touch loses all files and settings when downgrade is done)

    I´m just 12 yers old boy from Finland. (You can see my writing fouls in the guide)

  • Cummins

    Whenever I try to click on your redsnow links for windows, it sais either 404 page not found or internet explorer cannot display the webpage?!?!?

  • annonymous

    Hey i just download the jailbreak in my iphone 3g…I can’t seem to go inn the cydia apps after how many time i click it…and this white flashing light keep irritate me at the home screen..HELP!!!!

    • sj

      did you get redsnow thats compatible for iphone 3g?

      if you did… i’ve got nothin’

  • deelove

    I followed everything and looks like it worked execpt i dont get signal when i insert my tmobile sim ?? how can i fix this problem ? should i try the whole process again ? is there some kind of setting i have to change either in cydia or settings ?? please help and thanks 🙂

    • sj

      try backing up your iphone in itunes
      then restore your iphone (in itunes )
      then try to download cydia again

      http://support.apple.com/kb/ht1414 (how to back up, update and restore)

  • Harsh

    i have done the procedure as mentioned above and was done successfully but found suddenly that the call option is gone from my home screen, i can receive call and msg but i cannot make calls….pl pl pl pl pl help …and kind of favor is appreciated.

  • Fiona

    why won’t my iphone reboot after its in DFU mode?

    • sj

      hold the home and power botton in till ur iphone doesn’t reboot

  • Rodrigo

    Ohhh, Rafaela formata o iPhone

  • Ken

    thank you sir for such wonder post.

    iphone 3g with 4.2.1 jailbreak done.

  • hey
    i just did all that on my iphone 3g ios4.1 firmware6.15 and still my sim card won’t work, and also my wifi doesnt read any available hotspots. help please

    • kaushik reddy

      Install Ultra snow from cydia and ur sim card will work

  • I hope you help I have a problem with my phone I’m trying to do my work to update the device from version 3.1.3. To version 4.1.2 update,with red snow and when do I work the device from the new after jailbreak version stays the same does not take the new version??

  • i think my iphone 3G already jailbreaked clydia is in my iphone 3G now i want install new apps from apple store using itunes in PC but it seems if i do that my previous apps will gone and my wifi didn’t work i think it is deleted what i gonna do now?

  • Naeem Raza

    i am new to iphone so
    i want to update my iphone to 5.1 from 4.1 & i am using Iphone 3Gs .
    so what i need is download latest firmaware then install latest firmware with itunes and then browse my download firmware with redsnow and jailbreak it like this …
    plz tell me how can i do this

  • Deanne Lontoc


  • Deanne Lontoc

    redsnow 0.9.6 beta 1 for windows won’t download…page cannot be found

  • Jerico

    Is this a tethered JB?

  • How to put iphone in dfu mode
    Plz tell me

  • Guest

    How to Jailbreak iPhone 3G iOS 4.1 with RedSn0w to IOS 6.1

  • How to Jailbreak iPhone 3GS iOS 4.1 with RedSn0w to IOS 6.1

  • Guest

    hi, i have gotten as far as step 6, my phone reboots and nothing happens, just a black screen with the screen brightness at full, any suggestions?

  • srinivas

    I downloaded software 4.1 on my iphone 3G and it locked my phone. I unlocked (jailbreak) it this morning. If you need help let me know.

  • srinivas

    I have successfully update my iphone 3G 4.1 .But not able to unlock it to use sim . Its always in Searching mode for my netwrok . Anybody knows how to activate or add the carirer in my iphone .Please help me out , thanks