Fix iPhone 3GS Recovery Loop and Error 1015 During Restore with Custom Firmware 4.2.1

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For iPhone 3GS users who have upgraded to baseband 6.15.00 but are stuck in a recovery loop, please follow the instructions below to bring your iPhone back to life again.

If you have iPad’s baseband 6.15.00 implanted into your iPhone, iTunes will not allow you to restore with the original firmware as it does not recognize that particular baseband on an iPhone. In order to fix this, follow the instructions below:

  1. Download custom firmware 4.2.1 for iPhone 3GS [ 396.46MB download link]
  2. Use Redsn0w 0.9.6b to pawn DFU mode only [Windows or Mac]
  3. On iTunes, do a shift restore and point to the custom IPSW file you have just downloaded
  4. If you encounter error 16xx, use iREB-4.0.x-4.1-RC2 to fix this issue [download link, Windows version only]
  5. Repeat step 3 by doing a shift restore
  6. After restore is completed, your iPhone will reboot automatically and you will get to the emergency screen
  7. Use redsn0w again and chose the option just boot tethered right now
  8. Your iPhone will reboot showing a Pinapple logo and your it will be activated automatically
  9. UPDATED: Now you can untethered jailbreak iOS 4.2.1 with GreenPois0n RC6.

Good luck and leave your comments or issues below.

Editor's note: learn more by reading our ebook on starting your own iPhone repair & unlock business

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Comments & Discussion

  1. i have done unlock iphone it is very easy and remove 1015 error
    1. use have restore ur iphone at 4.01 at the when restore when u say error just minimize it and open tiny umbrella it have fix recovery.
    2. now click fix recovery ur iphone just reboot ur iphone unloked with no inserted sim card .
    3. open redsnow clickon install cydia ,install ipad baseland everthing plzz donot click on deactivate tetthered jailbreak or dfu mode
    4. after ur iphone unlocked and speed will increse
    thank u for reading this comment ……………!!!!!!!!!!!!!!!!!!!!!!!111

  2. i have a 3g jailbroken and unlocked. after using some time, when i tried to update the software through itune, it stucked and shows me error 1015. then i tried to fix the error by using Redsn0w 0.9.6rc12 with regular firmware and tried to restore with custom firmware, but i cant to fix it. its the same. please help me!

  3. i used sn0wbreeze for my iPhone 4 ,then used iTunes and installed 5.1
    now my iPhone don t recognize any Sims card ,and i am stacked with a black screen that says insert original Sims card. i can used only for emergency calls

  4. What if you dont know the baseband or the iOS version? Is there a way to get out of the 1015 error? Thanks!

  5. On iTunes, do a shift restore and point to the custom IPSW file you have just downloaded

    I cant understand what does this mean ?

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