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Now that GeoHot’s iPhone 3G/3GS unlocking tool BlackSn0w has been released, let me quickly share with you the best method to jailbreak and unlock your beloved 3G/3GS. Before you get started, make sure that your iPhone 3G or 3GS is on 05.11.07 baseband. Most importantly, you will have to first jailbreak your iPhone via Blackra1n and then install BlackSn0w. Here is what GeoHot had to say:

blackra1n RC3 is live for both Windows and Mac!!!
Clean firmware 3.1.2 and baseband 05.11.07 are recommended.

Updates:
Unlock!!!
Hacktivation
Keep legit activation if activated before running app
15 seconds faster, you’ll feel it
Tiger + PPC support

Go to blackra1n.com to download

It appears some users are having wifi issues. Try a “Reset Network Settings” Also, this just enables custom MobileConfig files. To fully enable tethering, go here on your iPhone and download a MobileConfig file for your carrier. Watch out for carrier fees for tethering.

Instructions on how to jailbreak and unlock your iPhone 3G/3GS using BlackRa1n and BlackSn0w for Windows:

1. Open your web browser of choice and navigate to www.blackra1n.com. Click the Windows logo at the bottom of the screen.
2. When prompted save the download to your desktop.
3. Then double click the blackra1n executable file from the desktop to launch the program
4. Make sure your iPhone or iPod is connected to the computer then click the large make it ra1n button
5. You iPhone will now be placed in recovery mode. You will see a picture of GeoHot that replaces the regular recovery mode screen on your device. blackra1n will run and then your device will reboot.
6. Once your device reboots it will be jailbroken and you will notice a blackra1n icon on the Springboard. Make sure you have an internet connection and press to launch the application.
7. Choose the installer application of your choice then press to select sn0w if you would like to unlock your device. Press the Install button at the top right of the screen to begin. BlackRa1n will begin to download and install the package you selected.
8. If you chose to unlock device using blacksn0w you will be presented with a Post Install log for sn0w. CommCenter will be restarted and there is no need to reboot. If your carrier doesn’t support 3G then disable it.
9. Press the Close button to continue. Once complete BlackRa1n will respring your iPhone and you will find the installer package of your choice on the Springboard.
10. Once you have confirmed your installer package is working correctly you may use the Uninstall blackra1n button inside the BlackRa1n app to remove it from your springboard.
    [via - iClarified]

Instructions on how to jailbreak and unlock your iPhone 3G/3GS using BlackRa1n and BlackSn0w for Mac.

1. Open your web browser of choice and navigate to www.blackra1n.com. Click the Apple logo at the bottom of the screen.
2. When prompted save the download to your desktop.
3. Then double click the downloaded blackra1n zip file to extract the application, then double click the application icon to launch the program.
4. Make sure your iPhone or iPod is connected to the computer then click the large make it ra1n button
5. You iPhone will now be placed in recovery mode. You will see a picture of GeoHot that replaces the regular recovery mode screen on your device. blackra1n will run and then your device will reboot.
6. Once your device reboots it will be jailbroken and you will notice a blackra1n icon on the Springboard. Make sure you have an internet connection and press to launch the application.
7. Choose the installer application of your choice then press to select sn0w if you would like to unlock your device. Press the Install button at the top right of the screen to begin. BlackRa1n will begin to download and install the packages you selected.
8. If you chose to unlock device using blacksn0w you will be presented with a Post Install log for sn0w. CommCenter will be restarted and there is no need to reboot. If your carrier doesn’t support 3G then disable it. Press the Close button to continue.
9. Once complete BlackRa1n will respring your iPhone and you will find the installer package of your choice on the Springboard.
10. Once you have confirmed your installer package is working correctly you may use the Uninstall blackra1n button inside the BlackRa1n app to remove it from your springboard.
    [via - iClarified]

Tags: unlock, BlackSn0w, BlackRa1n, Unlock iPhone 3G/3GS

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