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How to Use TetheredBoot Utility on Mac OS X to Boot into Tethered Mode?

TetheredBoot Utility is a tool created by Msft.Guy (@msft_guy) to boot iDevices into tethered jailbroken state on Windows and Mac OS X. Usage of TetheredBoot Utility is extremely simple. All you need is an iBSS file, Kernel Cache file, TetheredBoot app and the admin-access to the Terminal.

iPhone Verbose Mode

iBSS & Kernel Cache Files:

Every iDevice has a different iBSS and Kernel Cache file. There are two ways to get each of them:

  1. Rename the custom IPSW (.IPSW to .ZIP) which you have restored on your iDevice for tethered jailbreak. Extract it on your desktop. You can find Kernel Cache file in the root of extracted folder while iBSS file can be found by navigating to \Firmware\dfu directory.
  2. Download iBSS and Kernel Cache file for your iDevice from the links below:
  3. Download iBSS.n90ap.RELEASE.dfu & kernelcache.release.n90 for iPhone 4
    Download iBSS.n88ap.RELEASE.dfu & kernelcache.release.n88 for iPhone 3GS
    Download iBSS.n81ap.RELEASE.dfu & kernelcache.release.n81 for iPod Touch 4G
    Download iBSS.n18ap.RELEASE.dfu & kernelcache.release.n18 for iPod Touch 3G
    Download iBSS.k48ap.RELEASE.dfu & kernelcache.release.k48 for iPad

Steps to Boot into Tethered Mode Using TetheredBoot Utility:

  1. Download TetheredBoot Utility app for Mac OS X from here.
  2. Create a new folder on your desktop and name it tetheredboot. Put iBSS, Kernel Cache and tetheredboot app file in this folder.
  3. TetheredBoot Utility Mac

  4. Put your iDevice in DFU mode by using the instructions below:
    • Turn off your iPhone completely.
    • Press and hold the Home+Power button simultaneously for 10 seconds.
    • After 10 seconds, release the Power button but keep holding the Home button for another 10 seconds.
    • Your iDevice is now DFU mode.
  5. Open Terminal app and type the command below:
  6. sudo -s

  7. After executing the above command, Terminal will prompt you for your Administrator password. Enter your Administrator password and use the command below:
  8. /Users/Jaxov/Desktop/tetheredboot/tetheredboot /Users/Jaxov/Desktop/tetheredboot/iBSS.n90ap.RELEASE.dfu /Users/Jaxov/Desktop/tetheredboot/kernelcache.release.n90

  9. Use your own username instead of Jaxov in the above command. Also the command above is to boot iPhone 4 into tethered jailbroken state. If you are trying to boot different iDevice, use its own specified iBSS and Kernel Cache file. After entering command with correct iBSS and Kernel Cache file, hit the enter key.
  10. TetheredBoot Utility Command for Mac

  11. Thats it. Now wait while TetheredBoot Utility boots your iDevice into tethered jailbroken state.

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