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Enable Multitasking in iOS 4 on iPhone 3G without Redsn0w

If you will jailbreak iOS 4 on iPhone 3G using Redsn0w 0.9.5, you can enable "Multitasking" option your iPhone 3G easily. But it will also upgrade your iPhone's baseband to 05.13.04. So i would advise you to jailbreak your iPhone using PwnageTool 4.0 or Sn0wbreeze 1.6. Jailbreaking iOS 4 on your iPhone with the said tools will preserve your baseband but don't offer you to enable "Multitasking" while jailbreaking your iDevice.

The following guide will explain how you can enable "Multitasking" on your iPhone 3G even if your jailbreaked your iPhone via PwnageTool or Sn0wbreeze.
Multitasking Demo

Activate "Multitasking" on iPhone 3G Running iOS 4

  1. First step is to install iFile on your iPhone / iPod Touch. You can find step-by-step guide here for iFile installation on iOS 4.0
  2. Open "iFile" and and go to "root" directory. Tab on top left corner of your screen, it will take you root (/) directory.
  3. iFile Root Directory

  4. Go to /System/Library/CoreServices/ and look for N82AP.plist file.
  5. N82AP.plist File

  6. Once you will open N82AP.plist file, you will see the coding regarding your iPhone functions, you will need to edit the file and add "Multitasking" function to it and set it to "TRUE".
  7. Tab on "Edit" on top left corner of your screen.
  8. To enable Multitasking add following strings to N82AP.plist file.
  9. <key>multitasking</key>

    Multitasking Code

  10. One you are done with adding these strings, just tab on "Save" and "Done" and close the iFile app.
  11. Restart or respiring your iPhone 3G and enjoy multitasking on it.

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    vijay8 years, 9 months ago

    just download isprit software than go above perfect for me…thanks a lot…….. now ihave a problem for cellular data is not activated something problem is coming on my iphone 3g (Ios 4.2.1) , please some body help me.if you have a idea please send me on my id :-vijay_vaghela84@yahoo.comi am very thankfull to you

    Charles8 years, 11 months ago

    Thanks alot…. you made using an iphone worth it for me now

    GC10 years, 1 month ago

    I got a message that says I cannot save the changes this file. How do I save it?

    hardik dabhi10 years, 3 months ago

    does not work for me..
    on Iphone 3g, OS = 4.2.1, BB = 6.15
    my phone get stuck after restart

      Pramod10 years, 3 months ago

      Where does it get stuck? What is shown on the screen?

    Deepesh10 years, 7 months ago

    Will this happen in 3.1.3

    Coulton10 years, 8 months ago

    Doesn’t work for me… Tells me I can’t edit the file.

    I am on iPhone 3G iOS 4.2.1

    Steve11 years, 1 month ago

    Worked like a charm. Just made the change on my jailbroken 3G (4.0.1) and native multitasking is working.

    Zoiter12311 years, 2 months ago

    Looks good, will try it now!

    Z :)

      Reidar11 years, 1 month ago

      Works perfect! Thanks!!!!

    yay11 years, 2 months ago

    cool … thanks