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The new blacksn0w unlock for iPhone 3.1.2 firmware can enable official tethering option on iPhone 3G and 3GS. For those of you who don’t know, Internet Tethering is a process which enables you to use your iPhone as a wireless modem to share its Internet connection with a computer via USB cable or Bluetooth interface. We have already posted a complete step by step guide on how to enable Internet Tethering option on your iPhone 3G/3GS which has been jailbroken with PwnageTool 3.1.4, and unlocked with ultrasn0w running iPhone 3.1.2 firmware. The following step by step guide is for those of you who have recently jailbroken and unlocked your iPhone using blackra1n RC3 with blacksn0w.

Step 1: You will first need to jailbreak and unlock your iPhone 3G or 3GS using blackra1n RC3 with blacksn0w. Follow the complete step by step guide here to jailbreak, and here to unlock your iPhone on 3.1.2 firmware.

Step 2: Once you are done with the jailbreak and unlock, start Safari web browser on your iPhone and navigate to: http://m.peacefulinsanity.com/Tether.mobileconfig

Step 3: Safari will now prompt you to install an unsigned US AT&T Tethering .IPCC file on your iPhone. Allow the file to install by touching on install button.

Enable Tethering on iPhone 3.1.2 Firmware with blacksn0w

Step 4: Now reboot your iPhone by first holding down the “Home” button, followed by “Power” button simultaneously until you see Apple logo on the screen.

Step 5: Once your phone has been restarted, simply navigate to Settings->General->Network->Internet Tethering on your iPhone and turn on the toggle for Internet Tethering.

Enable Tethering on iPhone 3.1.2 Firmware with blacksn0w

That’s it! Tethering should now be running perfectly on your jailbroken and unlocked iPhone 3G and 3GS running firmware 3.1.2.

You may also like to take a look at the following guides:

You can ask me any question should you run into any problem in enabling Tethering on your iPhone which has been jailbroken and unlocked using blackra1n RC3 with blacksn0w.

You can follow me on twitter or join our facebook fanpage to keep yourself updated on all the latest iPhone jailbreaking and unlocking releases.

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