HOW TO: Jailbreak iOS 4.1 on iPhone 4, 3GS, iPad, iPod touch 4G / 3G on Mac

NOTE: If you are using Ultrasn0w to unlock your carrier, then don't use the instructions below as the unlock for new basebands is not available yet. For iPhone 4 users, use the instructions posted here to preserve your baseband. For other devices, wait for PwnageTool to be released this weekend.

STEP 1: Download Limera1n for Mac OS X from here.

STEP 2: Connect your iPhone to your PC via USB then launch Limera1n and hit “make it ra1n”
STEP 3: You will have to get your device into DFU mode by following the steps on the screen shown by Limera1n.

  • You iPhone will now be placed in recovery mode.
  • Press both the power and the home buttons.
  • When Limera1n asks you to, release the power button.
  • Your phone will now be in DFU mode
STEP 4: You should see a message like this indicates that your devices has been jailbroken successfully.
STEP 6: Now start Limera1n app from your iPhone, iPad or iPod touch and install Cydia as shown in the screenshots below.

STEP 7: Now simply restart your device and enjoy the jailbreak!