How to Jailbreak your iPhone 3G running 4.2.1 Firmware with Windows 7 and redsn0w.

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If my video helps you please like it. See links for files below.

A step by step guide on how to Jailbreak your iPhone 3G running 4.2.1 Firmware with Windows 7 and redsn0w. If you are looking for the apps that I used in this guide you can download them at my website….

41 thoughts on “How to Jailbreak your iPhone 3G running 4.2.1 Firmware with Windows 7 and redsn0w.

  1. thnx man helps alot  !! but i got question i upgrade my 3g to ios7 succesfully installed but then cant search networks 🙁 but ryt now im using 4.2.1 ….
    any solution with that ?

  2. hi sir .. i have a little situation right now about an iphone 3gs .. the camera is not working , stuck at shutter and the wifi is stuck on searching so i tried to restore it on ITunes and then an error came by "1015" .. and now the phone is stuck on the recovery mode which is the screen is stuck connecting to itunes .. can you give some advice to fix it .. TIA ! GOD BLESS!

  3. after 3 hours, it worked! thanks

    Problems encountered:

    1. USB communication problem 
         – had this, because i ran jailbreak on DFU mode right away.
         – fixed by making sure you run jailbreak first with the phone "ON" and connected (not on DFU mode)
         – then follow instructions
    2. !mark (bang) DFU driver not found
          – fixed by reinstalling itunes
          – installing driver manually on device manager, (browse) target C:/

    THANKS for the video mate!

    >Windows 8.1 Pro 

  4. Hi Matt ,
    While running jailbreak it shows an error " Please provide the required IPSW"
    What should be done ??
    Tried searching the web for answers … didnt help
    Pls advise

  5. Worked in the same time like on video. Followed the steps. I did it so I can use Skype and Viber on it. That is next. Thank you! After this Cydia had 8 updates when I tried to get Appsync and I get POSIX Connection reset by peer… I'll just live it to run all of it.. maybe it just needs time.

  6. hi there,  i downloaded the firmware,  (iPhone4,1_5.1_9B179_Restore) but don't know how to get inside the iphone. when i try to open the software it end with itunes.

  7. Hey @123myIT , I also Do this In my iphone 3g, but when i turn it off , it shows the apple logo , then i do the jailbreaking , and it didnt work. please Reply , My iphone is also 3g and having An Ios 4.2.1 firmware.

  8. Hi, I had been trying for days to get jailbreak to work. Found your Utube video and followed your instructions. IT WORKED 1st time. You are a star. Thankyou.

  9. hi, i have a question, i am on base band 06.15.00 with firmware 3.1.3, can i update that firmware to 4.2.1 using redsnow jailbreak straight from 3.1.3 to 4.2.1???

  10. Is this safe? Due to the older firmware. Will setting up a SSH root password be sufficient to secure your phone in this case? And after you've removed the jailbreak, will the level of security go back to normal or will there still be a sort of security gap because of the jailbreak (and which you will have to secure it yourself by a SSH root password or something like that)? Please help! Thanx in advance.

  11. Hi! Can u help me? i want try jb ios 4.2.1 iphone 3gs always Looking This : USB COMMUNICATION PROBLEM / WAITING FOR REBOOT why dont work redsnow??? i try used different versions 🙁 pls help me

  12. after i install cydia the first thing i search for was whatsapp, however it gave the option of user, package and something else i selected package, unable to download anything. did i do something wrong????

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