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Jailbreak iOS 4.1 on iPhone 4, 3GS, iPod Touch 4G, 3G or iPad with Limera1n on Mac OS X [How-To Guide]

Geohot released Limera1n for Mac OS X last night. Like Windows version, Limera1n for Mac OS X can jailbreak iOS 4.1 on iPhone 4, 3GS (Old+New Bootrom), iPod Touch 4G, 3G and iPad. As Limera1n do not support iOS 4.1 jailbreak on iPhone 3G and iPod Touch 2G, you can use this PwnageTool to jailbreak iOS 4.1 on iPhone 3G and Redsn0w (Win | Mac) to jailbreak iOS 4.1 on iPod Touch 2G.

iPhone iOS 4.1 Jailbreak
NOTE: If you rely on an unlocked iPhone, do no update to iOS 4.1 directly as it'll also upgrade your baseband which is yet to be unlocked with upcoming version of Ultrasn0w. Either use TinyUmbrella (Only for iPhone 4) to upgrade to iOS 4.1 without upgrading your baseband or wait for PwnageTool to jailbreak iOS 4.1 directly on your device while preserving the baseband of your device.

Steps to Jailbreak iOS 4.1 on Mac OS X with Limera1n Tool:

  1. Download Limera1n for Mac OS X from here.
  2. Make sure you have latest version of iTunes installed. If you are jailbreaking iPhone or iPod Touch, it should be on stock iOS 4.1 and if you are jailbreaking iPad, it should be on stock iOS 3.2.2.
  3. Connect your iPhone, iPod Touch or iPad to your PC via USB cable and sync it with iTunes to backup all data on your device.
  4. Launch Limera1n.exe
  5. Limera1n iOS 4.1 Jailbreak Mac

  6. Click on make it ra1n button. Limera1n will now put your device into recovery mode.
  7. Limera1n iOS 4.1 Jailbreak Mac

  8. Once your device is in recovery mode, you'll see the following image on its screen.
  9. iPhone Recovery Mode

  10. Now hold Home+Power buttons simultaneously and keep your eye on the Limera1n tool.
  11. Limera1n iOS 4.1 Jailbreak Mac

  12. Release the Power button as soon as you see the following message on Limera1n window but keep holding the Home button.
  13. Limera1n iOS 4.1 Jailbreak Mac

  14. Hold the Home button until Limera1n detects your device in DFU mode.
  15. Limera1n iOS 4.1 Jailbreak Mac

  16. Wait while Limera1n jailbreaks your device. Once its done, you will see the following confirmation messages.
  17. Limera1n iOS 4.1 Jailbreak Mac

  18. Turn on your device and you'll see Limera1n app installed on your iDevice. Open Limera1n app and install Cydia from it. You may uninstall the Limera1n app once Cydia has been successfully installed on your device.

Video Tutorial:

Unlock iOS 4.1 on iPhone 4, 3GS (Old+New Bootrom):

iPhone 3GS users with older basebands or iPhone 4 users who updated iOS 4.1 by using TinyUmbrella, can unlock their iPhones using the latest version of Ultrasn0w. Download Ultrasn0w 1.1-1 from here and follow the step-by-step instructions here to unlock your iPhone running jailbroken iOS 4.1.

Update1: Jailbreak iOS 4.1 on iPhone, iPod Touch, Apple TV & iPad with PwnageTool 4.1
Update2: Jailbreak iOS 4.1 on iPhone 4/3GS/3G, iPod Touch 4G/3G/2G & iPad with Redsn0w

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