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Redsn0w Freezes at Uploading RamDisk in Windows 7 [How-To Fix]

Couple of weeks ago, we shared a tutorial to jailbreak iOS 4.2.1 on iPhone 4/3GS/3G, iPod Touch 4G/3G/2G & iPad using Redsn0w 0.9.6 but many users reported that they are still unable to jailbreak their iDevice as Redsn0w freezes and then crashes at 'Uploading ramdisk' step during the jailbreak process. I have found an easy workaround for this problem which worked for many users and i hope this will work for you as well if you are facing the similar issue.

This fix should for work for the following Redsn0w errors:

  • Redsn0w freezes at 'Uploading ramdisk' step
  • 'Redsn0w.exe has stopped working' error in Windows 7 or Vista
  • Redsn0w crashes when iPhone screen displays 'Downloading Jailbreak Data'

Redsn0w Uploading RamDisk Error Redsn0w Freezes at Uploading RamDisk in Windows 7 [How To Fix]

Solution:

In order to solve this issue, you need to run Redsn0w as an administrator in Windows XP SP2 compatibility mode and set the Redsn0w process affinity to CPU 1 through 'Task Manager'. To do so, follow the steps below:

  1. Right-click on Redsn0w.exe and choose 'Properties' from the context-menu.
  2. Go to Redsn0w Properties Redsn0w Freezes at Uploading RamDisk in Windows 7 [How To Fix]

  3. Switch to 'Compatibility' tab and choose 'Windows XP (Service Pack 2)' as the compatibility option. Click OK button to close the 'Properties' window.
  4. Redsn0w.exe Properties Redsn0w Freezes at Uploading RamDisk in Windows 7 [How To Fix]

  5. Again right-click on Redsn0w.exe and choose 'Run as administrator' from the context-menu.
  6. Run Redsn0w as Administrator Redsn0w Freezes at Uploading RamDisk in Windows 7 [How To Fix]

  7. Launch 'Task Manager' by pressing Ctrl+Alt+Delete and switch to 'Processes' tab.
  8. Right-click on 'redsn0w.exe' and choose 'Set Affinity...' as sown in the screenshot below:
  9. Windows Task Manager Redsn0w Freezes at Uploading RamDisk in Windows 7 [How To Fix]

  10. Set 'Process Affinity' to CPU 1 only.
  11. Redsn0w Processor Affinity Redsn0w Freezes at Uploading RamDisk in Windows 7 [How To Fix]

  12. Click OK to close the window and proceed to the on-screen jailbreak instructions. Hopefully, Redsn0w will not freeze on 'Uploading ramdisk' step now.

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108 comments
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  •  
    znb2 months, 1 week ago

    Does this method work for the “Unexpected error with SHSH blobs”on iphone 4?

  •  
    chris.m8 months, 3 weeks ago

    Soooo… i did this but at the “set affinity” stage it says access is denied. please help. ive been as this for days And i have Done Everything humanly possible to unlock this iphone3g

  •  
    GurvSwerve1 year, 5 months ago

    Thank you so much, it worked on my iPhone 3G :)

  •  
    Michael1 year, 6 months ago

    utterly brilliant… nuff said.

  •  
    Michael1 year, 6 months ago

    2013 – april -got Iphone 3 for fun… couldn’t unlock  (I’m using XP pro as admin) I tried these ideas here – run in win95 compatibility mode and set cpu to cpu1 only – I am watching my iphone load up redsnow now – Utterly butterly, Wolverine!!! Peace!!!

  •  
    Leon1 year, 6 months ago

    Great! it works for me.

  •  
    sahil1 year, 7 months ago

    not working…..help me

  •  
    Max2blame1 year, 10 months ago

    It Worked! I encountered the same error but after i read your article, it WORKED! Thank man. Appreciate it a lot. . . . .

  •  
    Mr Blue1 year, 11 months ago

    it’s worked! Thanks a lot :D

  •  
    Daniel1 year, 11 months ago

    It work, thanks a lot! =))

  •  
    peter nap1 year, 12 months ago

    It worked, thanks! Great work :D

  •  
    Calebrity2 years ago

    Totally worked. Thanks a bunch :)

  •  
    Jocelyn2 years, 1 month ago

    This didn’t work for me. For some reason when i chose ‘set affinity’ it says “access denied.”I am the ONLY administrator on my laptop. :/

    •  
      Helpdude1 year, 9 months ago

      you need to click show process from all users

  •  
    sunny2 years, 1 month ago

    thanks

  •  
    snyperg792 years, 2 months ago

    dude it so worked………..even updated cydia after it was finished

  •  
    sami2 years, 2 months ago

    You are our Hero. Thanks alot man, you explain better than many blogger and editors :)
    Thump up and BRAVO!

  •  
    Oday Sayyed2 years, 3 months ago

    it doesn’t work !!! what i can do now ??

  •  
    Ktzz2 years, 3 months ago

    Works Tnx !

  •  
    Hoanghoang032 years, 6 months ago

    This worked great.. thanks!

  •  
    Ryanhardy0572 years, 6 months ago

    Finally useful solving of Windows task management appeared! Thanks for it and all the users are pleased to know what to do with the errors. As for me personally I used to works with Windows task manager, but now I shifted to comindware task management (http://www.comindware.com/task-management/) and have no problems with errors and similar nuisances.

  •  
    Booops242 years, 6 months ago

     please help me
    i did that but the same problem remains
    ‘Redsn0w.exe has stopped working’ error in Windows 7 or Vista

  •  
    fasat21122 years, 7 months ago

    works perfect. I almost brake my iPod. thanx

  •  
    Linhnguyen2 years, 7 months ago

    thankssssssssssss alot :)

  •  
    Laz172 years, 7 months ago

    Muchas Gracis por todo!

  •  
    Gamalier Ortiz2 years, 7 months ago

    Didn’t Help…

  •  
    First2 years, 9 months ago

    Thanks!!!!

    •  
      Yash Saneja2 years, 8 months ago

      you really rock thank you sooo soo much

  •  
    TB2 years, 9 months ago

    You are a genious! Thank you! After I made these changes, it worked perfect! TY!

  •  
    alex345672 years, 10 months ago

    does anyone maybe know how to do this on a mac?

  •  
    MindFreak2 years, 10 months ago

    dude it not a problem just do the compatibility mode and ur fine

  •  
    MindFreak2 years, 10 months ago

    THank u so much dude

  •  
    Amirul Islam2 years, 11 months ago

    Fantastic. I had to search for 6 months to get the solution. God bless you.

  •  
    dhilip2 years, 11 months ago

    Thanks a lot man. You are awesome. thanks again.

  •  
    Ishi3213 years ago

    It Works For Me
    Thanx

  •  
    Robbe3 years, 1 month ago

    If i press ‘set affinity’ it says: access denied. Can someon help me please?

    •  
      Pramod3 years, 1 month ago

      Make sure that your having Admin rights to your PC for the a/c that you have logged in with. You shouldn’t be even trying RS on a computer like that.

  •  
    mike3 years, 1 month ago

    hey good post.. it worked after i changed the settings.. thnx a lot .. God bless

  •  
    Jambil3 years, 1 month ago

    oh man thanks a lot =) its actualy working =)

  •  
    Karim3 years, 1 month ago

    Great thanks! Finally :)

  •  
    maner3 years, 3 months ago

    big thank you
    its working fine :)

  •  
    hobbes!3 years, 4 months ago

    thank you man!!! i love you so much!!! hahaha… this works.. been frustrated for hours. how’d you find out about this!!! you’re the man!!

  •  
    mat3 years, 5 months ago

    ok it works farther than it usually does and when it says exploiting to limera1n the iphone shows connect to itunes please help

    •  
      Wolverine3 years, 5 months ago

      Which version of Redsn0w, IPSW file and iDevice model you have got? This usually occurs when you run Redsn0w over iPhone running custom IPSW.

  •  
    tony bean3 years, 5 months ago

    worked perfect thank you soooooo much :)

  •  
    Shahzad3 years, 5 months ago

    Thanks a lot it is working..

  •  
    Helder3 years, 6 months ago

    Yes,it did work!
    Thanks man!

  •  
    Rov3R3 years, 6 months ago

    thanx very much dude, it works %100

    really really THANK YOU! :D

  •  
    Pastor Z3 years, 6 months ago

    Wow! It really worked – thanks!! :D

  •  
    jt3 years, 6 months ago

    It got further than it used to but it still crashed

    •  
      Wolverine3 years, 6 months ago

      Run your computer in safe mode and then follow the above guide. It helped many!

  •  
    Juliano Passos3 years, 6 months ago

    Muito bom, agora o redsn0w funcionou!

    thank`s!

  •  
    theodoros3 years, 6 months ago

    At last it worked!!!
    many thanks

  •  
    Mike3 years, 6 months ago

    OK, so i have an iphone 3g 4.2.1 and baseband 05.15.04. i ran redsn0w as administrator, do the affinity thing after clicking “show processes from all users” and set it to only have cpu 1(mine has 7 cpu’s though, don’t know if that matters). then i set it to high priority. then, when i get to the point where it downloads iPad BB files, it just sits like that for a while and then redsn0w shuts off and i gotta reboot my phone. somebody help me please, i’ve been wrestling with pretty much every problem possible over the last few days on this.

    •  
      Mike3 years, 6 months ago

      oh by the way i actually have Redsn0w 0.9.6rc14, does that make a difference, i’m guessing it’s just the newest version and should work for my iphone and it’s firmware. am i possibly wrong?

      •  
        Wolverine3 years, 6 months ago

        Redsn0w 0.9.6rc14 can not jailbreak iOS 4.2.1 on iPhone 3G. Its for jailbreaking iOS 4.3.2 on iPhone 4/3GS, iPod Touch 4G/3G and iPad. You must use Redsn0w 0.9.6rc8 http://bit.ly/dRc3F4

        •  
          Mike3 years, 6 months ago

          that website can’t be displayed, i’ve tried several other sites which just take me back to the same page. any other link i can use?

        •  
          Mike3 years, 6 months ago

          also, isn’t that version a tethered jailbreak? so i have to replug it back into my computer every time i have to reboot my iphone?

          •  
            Wolverine3 years, 6 months ago

            It is untethered for iPhone 3G and iPod Touch 2G (MB) users only.

        •  
          Mike3 years, 6 months ago

          ok so i got 0.9.6rc8 and downloaded the ipsw through firefox this time and now when it gets to the point where it fetches baseband data i get “baseband fetching error”. and it says check ur internet connection. is that the only problem or is there something else i can do? sorry for all the replies on the same thing but i keep finding new workarounds and then those new workarounds end in more trouble lol. anyways, help would be appreciated. thanks.

          •  
            Wolverine3 years, 6 months ago

            Yep, Redsn0w is unable to fetch iPad baseband files as your internet connection is either slow or down. Make sure your firewall is turned OFF and there is no Antivirus running!

        •  
          Mike3 years, 6 months ago

          ok, lol. so i found out that the whole problem with “baseband fetching error”, u simply have to make sure ur browser is up, worked for me. anyways, so i got past the bb fetching error but now i’m back to 1 of my original problems. Redsn0w gets through everything and says finished, but instead of my phone showing the icon of the harddrive and saying “downloading jailbreak data” my phone just gets hung up on a blank black screen with the backlight on. Redsn0w meantime just says finished and the rest of the process takes place on my device. Do u possibly know of a way around this now? please tell me u do, i’m newly stationed in Sicily and just wanna use my phone over here. thanks a lot.

          •  
            Wolverine3 years, 6 months ago

            Ok. Now here is the catch. Jumping from iOS 4.x.x to iOS 4.y.y requires SHSH blobs *even on iPhone 3G and iPod Touch 2G (MB)*. So you need to restore custom iPhone OS 3.1.2 IPSW and then upgrade to iOS 4.1 or 4.2.1 (Your choice).

        •  
          Mike3 years, 6 months ago

          ok, so after downloading all the ridiculous amounts of programs needed to downgrade and downgrading to 3.1.2, it just looked like it was in recovery mode in the background but i could “slide for emergency” for some reason. anyways i couldn’t use the phone. i then realized that it was because the only blobs that tinyumbrella saved were 4.1 and 4.2.1. so then i tried restoring the phone to 4.1 and then jailbreaking to 4.2.1. and now i’m back to the same blank black screen with backlight that i had in the first place. it worked after restoring it to 4.1 through itunes. but when i tried to jailbreak to 4.2.1 i just got the same problem. so, since i can’t go back to 3.1.2, am i unable to jailbreak my phone? thanks for all the help so far, but any more insight would be awesome. thanks

          •  
            Wolverine3 years, 6 months ago

            You can still downgrade to iOS 3.1.2 and then you can still upgrade to iOS 4.1. Also when u were on iOS 3.1.2, you were only a click away to jailbreak and hactivate your iPhone using blackra1n. I am not sure if your baseband has been upgraded to iPad baseband or not. But if its not upgraded to iPad baseband, you can restore to stock iOS 4.2.1 IPSW and then jailbreak it with Redsn0w. Again to restore stock or custom iOS 4.2.1 IPSW, you need to restore iOS 3.1.2 first then you will be eligible to jump to iOS 4.2.1. I would personally recommend you to stick to iOS 3.1.2 or iOS 4.1 as both of these releases were much stable with no battery life and recovery loop issues.

        •  
          Mike3 years, 6 months ago

          oh wow, i can’t believe i was so close. i have baseband 05.15.04 so i should be able to go back to stock 4.2.1. but if ur saying it’s best with 4.1 or 3.1.2, then i’ll stick with that. but i’m guessing i would have to download blackra1n. so to recap, redowngrade back to the 3.1.2 where i’m stuck with only being able to “slide for emergency” and then use blackra1n to jailbreak/unlock to 4.1 since i got the blobs for 4.1 and because it’s more stable with no battery life issues. i’m sorry if i sound stupid, i’m not a huge computer person and i just started this adventure earlier this week when i arrived here so bare with me here. thanks to u and google, i’ve learned a lot so i appreciate it. ciao.

          •  
            Wolverine3 years, 6 months ago

            Nops, you are little confused.

            1. Downgrade back to iOS 3.1.2 (No blobs needed) (You can jailbreak using blacra1n but can not unlock because your baseband is not directly unlockable with Ultrasn0w).
            2. Blackra1n can only jailbreak iOS 3.1.2
            3. Jumping from iOS 3.1.2 to iOS 4.1 do not require SHSH blobs but jumping from iOS 4.1 to iOS 4.2.1 requires SHSH blobs.
            4. You can jailbreak iOS 4.1 using Redsn0w http://bit.ly/hVbmfC

        •  
          Mike3 years, 6 months ago

          alright well, i actually need to unlock my phone cuz i’m in Europe coming from the U.S. and need to get a new provider, i just want to jailbreak it in the process. i was hoping i could just use redsn0w to jailbreak and unlock 4.1 but it’s looking like i can’t do that. how do i jailbreak and unlock my 3G 4.1 with 5.15.04?

          •  
            Wolverine3 years, 6 months ago

            For that, upgrade to iPad baseband using this guide http://bit.ly/gI22Px and the downgrade back to iPhone OS 3.1.2 (Custom IPSW). Once done, upgrade to iOS 4.1 (Custom IPSW) and unlock it with Ultrasn0w.

        •  
          Mike3 years, 6 months ago

          it still gets a blank black screen with backlight when trying to use redsn0w to upgrade to 6.15 in order to make it unlockable. it was doing this when i had 4.2.1 and it’s doing it now with 4.1. i’m using 0.9.6rc8 instead of the beta tho cuz i already got it and it should be better anyway right? also itunes won’t let me restore my phone because it says the software’s too old. so how can i upgrade/downgrade anymore if i can’t even restore it and get to the screen where i do the hold shift thing and then click restore?

          •  
            Wolverine3 years, 6 months ago

            When you use Redsn0w, at what step it gets stuck? Uploading ramdisk? Fetching baseband? Waiting for reboot? etc. Do take these precautions http://bit.ly/grQtBl before using Redsn0w. Also resume the conversation here http://bit.ly/etlFRp I think this thread is getting too lengthy :D

        •  
          Mike3 years, 6 months ago

          alright man, so i finally got it to work. i found a thread where someone was talking about having the black screen after using redsn0w and found a solution posted by someone else. they said that if u put ur computer into “safe mode with networking” by pressing f8 while the computer boots and going to advanced options, ur jailbreak will work. they also said to log in as administrator. but ya pretty much they realized that running the computer regular would run too many processes on the side and not allow the jailbreak to go all the way through. so after booting up in safe mode, i just ran redsn0w 0.9.6rc8 and chose to upgrade ipad baseband and install cydia and a few other options. it worked flawlessly and my phone’s now jailbroken, and after installing ultrasn0w i also have successfully unlocked my phone with the 6.15 baseband firmware. thanks for all the help along the way, i learned a lot. hope my experience helps u help others with my same problem. alright, ciao.

          •  
            Abdo2 years ago

            Try After Try and after reading this long blog up to this point it just occured to me to make the compatibility to Windows 95 OMG what a relief after 1 year and 1 month and 1 day exactly since 9/13/2012 to 10/14/2012 it worked.

  •  
    Rodney3 years, 6 months ago

    DONEEEE!!!!!!!

  •  
    Alek3 years, 6 months ago

    Thank you dude! I cant believe it worked! :) I’m so happy!

  •  
    jose3 years, 6 months ago

    thanks :)it worked for me

  •  
    canuckpunk1873 years, 6 months ago

    That went so smoothly!!! try after try after try and kept getting the same thing… followed those EASY steps and worked flawlessly thanx so much

  •  
    nasserlol3 years, 6 months ago

    i love you!

  •  
    Garry3 years, 6 months ago

    Just wanna say thanks, your instructions worked a charm

  •  
    Michail Wilson3 years, 6 months ago

    You Rock – Damn, wish I found the site a week ago, it would have saved so much time. Instantly solved my problem. Win Vista 32bit on dual core. XP and as Admin was what I had. Affinity solved it.

  •  
    JAVEEZY3 years, 6 months ago

    Thx alot dude
    really helped!!!!!!!!!!!!!!!

  •  
    GauchaNL3 years, 6 months ago

    Tks guys, worked as a charm.

  •  
    Bjorn3 years, 6 months ago

    The on-screen instructions are great (if you have those options). my redsn0w application doesn’t offer me any of those options!

    •  
      Wolverine3 years, 6 months ago

      Can you explain the issue? You mean Redsn0w is not displaying any text when you are launching the app?

  •  
    Matt3 years, 7 months ago

    Thanks a million!

  •  
    Irmaisha3 years, 7 months ago

    Thank you…this is the best solution. Thumbs up

    •  
      Mr.Brains3 years, 6 months ago

      Your Welcome

  •  
    Mr.Brains3 years, 7 months ago

    I figured out how to fix the affinity thing you have to go to the task manager and click on the bottom “show processes from all users” that will fix the problem

    -your welcome

  •  
    Darth Vader3 years, 7 months ago

    Thank you! Similar issue with Redsnow 0.9.6rc9 gets stuck at “exploiting with limera1n” … setting affinity to CPU 1 worked like a charm. Thank you thank you thank you!!! :-)

  •  
    Ryan3 years, 7 months ago

    Now it just freezes on Getting iPad Baseband Files!!! So now it freezes one step earlier… great!!

    4.1, 3GS

    •  
      Wolverine3 years, 7 months ago

      No it do not freezes. It takes sometime to download iPad BB files. 2-4 minutes delay is normal. Wait and be patient.

  •  
    Wayne3 years, 7 months ago

    Thanks you men!! you made my like easier :)))) and fck the microsoft windows 7 :)))

  •  
    Alan Corral Samaniego3 years, 7 months ago

    OMG! thank you so much! Yeaaah! finally!!

  •  
    Shankar3 years, 7 months ago

    Hi i am not able to edit the affinity in my pc. It says Access denied. So tell what must i do. Even though i log in with the administrator prevailages i am not able to edit the same. Kindly let know with any other process that is available.

    •  
      Shankar3 years, 7 months ago

      Hey kindly please reply me with my query. Also i wish to know, now presently i have JB using Greenpoision, i do not have cydia with me. If i JB Again do i lose the JB or the files that are there. OR do i need to do a fresh restore of the OS.

      •  
        Wolverine3 years, 7 months ago

        To set CUP affinity, you need administrator privileges. You can rejailbreak your iDevice using GreenPois0n without full restore again.

      •  
        Mr.Brains3 years, 7 months ago

        Actually well you do need administrator privileges on the bottom of the task manager there is a button that says “show processes form all users” click on it and wuala! fixed hope this helped

  •  
    zook3 years, 7 months ago

    hi guys

    still have a problem here. My pc doesnt let me set cpu afinity, it says not alowed or something. any workaround?

    •  
      Wolverine3 years, 7 months ago

      Make sure you are logged in as administrator!

    •  
      grimmreaper3 years, 6 months ago

      1. If you cannot set the affinity, just click the “Show processes from all users” tab and right click again on “redsnow.exe” and you’ll be able to set the affinity to cpu 1…..

      2. Make sure you are logged in as administrator….

  •  
    Kimiko3 years, 8 months ago

    Thank you thank you thank you so much. Noobs like me just dont know our ways to the computer. Though, if I cannot set the affinity (it doesnt allow me); will it make a difference?

    •  
      Wolverine3 years, 8 months ago

      Yes, Redsn0w will crash if you will not change CPU affinity to 1. It wont effect your computer performance or any other app except Redsn0w.

    •  
      grimmreaper3 years, 6 months ago

      If you cannot set the affinity, just click the “Show processes from all users” tab and right click again on “redsnow.exe” and you’ll be able to set the affinity to cpu 1…..

  •  
    Justin D3 years, 8 months ago

    Thnx a bunch man!! U rock! Tried so many things and after your advice it worked like a charm. Props to ya bro

  •  
    Eliath3 years, 8 months ago

    It Worked!!! your awesome..

    Thanks for your info :)
    Eliath

  •  
    Ben Johnson3 years, 8 months ago

    Finally it worked. Million thanks to Wolverine :D

  •  
    Burak3 years, 8 months ago

    Thanks,

    it worked perfect…