How to Jailbreak iOS 4.0.2 with Redsn0w

While it appears to have only been tested on an iPhone 3G and an iPod touch 2G (non-MC model) as of yet, it looks like Redsn0w can jailbreak the latest firmware released by Apple today, iOS 4.0.2. If you are interested in doing this, a step by step guide is posted below.

  • Download iOS 4.0.2 via iTunes 9.2.1.
  • Update your iPhone to the latest firmware you downloaded in step 1.
  • Start Redsn0w 0.95b5-5 and select iOS 4 (Final Version), not iOS 4.0.2.

  • Choose “Install Cydia”, followed by “Next”

  • Now, Turn your device OFF and connect it to your PC before clicking next, as directed on the screen. (image below)
  • Put your iPhone into recovery mode by following the onscreen instructions

iPhone in Recovery Mode

  • Redsn0w will now complete the process and leave you with a jailbroken iPhone or iPod touch running the latest iOS 4.0.2 firmware release

Download links:

Download iOS 4.0.2

Download iTunes 9.2.1

Download iOS 4 (Final Version)

RELATED:  iPhone Dev Team Say’s iPhone Firmware 3.0 Beta is Jailbreakable



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39 thoughts on “How to Jailbreak iOS 4.0.2 with Redsn0w”

  1. Yep, it works great on 3G!

    Only little problem though is that Appsynch 4.0 won’t install from cydia. Hopefully hackulous will come up with an update in the next couple of days.

  2. Hi my name is luis and I hope u can help me…. I follow all the steps and also do the downloads and I get a massage at the last moment of the proses…. It says something like THE PROSES CAN BY FASTER IF YOU SWITCH TO HI SPEED USB PORT… and I close the box and after that nothing happen… and the Redsn0w box stop on WAITING FOR REBOOT and that its all…

    I really need help to jailbreak my iphone because I make a mistake to restore it to the 4.0.2 firmware ….

    I HOPE U HELP ME thanks for your time….

  3. My itouch is at the stage whereby it says ‘waiting for reboot’. But, it does not show any progress though. Does it take very long?

  4. Dear Friend

    I have updated my lock iphone 3gs 4.0.2. i need jailbreak.please help me jailbreak.


  5. i wanna jailbreak

    dose this work on ipod touch 3rd gen?
    cause i used 2 hav mine jailbroken but i decided 2 update it and now i realised its better jailbroken…
    i hav a 32gig 3rdgen updated 2 4.02…
    plz help me thanks

  6. i hav an ipodtouch 32gig 3rd gen updated 2 4.02 like the guy above… actully that was me so send me something on how 2 jailbreak it propablly it used 2 jail broken but i wanted 2 update it but i want 2 re jailbreak plz help like i said befor
    32 gig 3rd gen 4.02<–updated to plz help it will be much appreciated thanks… :) :P :D :O :( 8)

  7. hi i have tryed this this and it is stuck on the waiting to reboot screen wen jailbreacking 1 how long does this take 2 i click canncle and now my ipod touch has just a blank screen i tryed to turn it on and nothing to i did the jail breack prosses again and the same happened please help me…. :(

  8. I have an iphone 3gs and I followed the steps. The screen is stuck on “please wait while your device is being processed…waiting for reboot.” Please tell me this is normal. It’s been here for a while and my phone appears to be off. What should i do?

  9. I followed the steps to jailbrake a 3GS and the device is working fine, Thanks for the this. Anyone know of any tethering option for iOS 4.0.2?

  10. Hi,
    I successfully Jailbroke My Ipod Touch 2nd Generation non-MC Model with redsnow. But on accident I updated my firmware to 4.0.2, and my ipod is now stuck in recovery mode. When I try to restore it, it wont allow me too. So now I’m on a computer that does not have itunes, and I’m waiting for it too download as I type. I am downloading itunes 9.0.2, because I didn’t know anything about 10.0.2. Can anyone please help me. My laptop hard drive crashed and my itouch is all i have left. PLEASE S.O.S

  11. Rename zip to ipsw

    If you have downloaded Ios 4 Final Version and it arrives at your computer as a ZIP file then right-click on the file, select RENAME and change ZIP to IPSW. Hope this helps. Did my head in for a few hours.

  12. Mine is stuck on the “Please wait while your device is being processed” screen, on 4.0.2. anyone know what to do?

  13. Got stuck on “Please wait while your device is being processed. Waiting for reboot”
    Is my iPod touch bricked now?

  14. hi everyone… i know it would seem like it’s stocked to the processing mode. but patience is the key. don’t be tempted to press the power button while it’s on processing mode or you’ll mess the whole setup. just wait because it takes a while for the processing to be done. hope this helps ;)

  15. how long does it take? i’m stuck on “Please wait while your device is being processed. Waiting for reboot”. it’s been stuck on this part for at least 30 minutes

  16. Ok guys, here’s the solution; just follow these steps.It worked for me.

    When iphone/ipod is stuck & redsn0w is on “Waiting for reboot” & unplugging & plugging doesn’t work, try this (Surely – under your responsibility):* Leave the redsn0w as it is and OPEN ANOTHER INSTANCE OF REDSNOW. (FOR MAC:go to your redsn0w application; right click–> duplicate –> now you have a copy–> now you have just to do like you did before.* Browse for the same file, & check the same checkbox’s as before* Your iPhone/ Ipod is still turned off * Follow the steps for turning it on in DFU mode* Your Iphone will reboot 1-3 times, at the? second it reboots and shows a white screen click CANCEL in second redsn0w!!

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