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Unlock & Root Samsung Galaxy S 2

handy giff-staffer

Firstly, the competition stuff.  To enter this competition to win an unlocked Samsung Galaxy S 2, you will need to tweet this article.  You can do this in two ways: -

 

  1. The first is to use the blue Share button at the bottom of the post - find Twitter and tweet this from your Twitter account - please use the following hashtag:  #unlocksamsunggalaxys2.
     
  2. Or you can sign into your Twitter account first, and then copy and paste the following into your status:

Unlock & Root Samsung Galaxy S 2 free http://bit.ly/HETIt7  #unlocksamsunggalaxys2

 

How to Unlock Samsung Galaxy S2 free

 

As far as we're aware in order to unlock your Samsung Galaxy S 2, you will first need to root it.  Follow the instructions below carefully to unlock and root your Samsung Galaxy S 2.  Before beginning the process it's always wise to back-up all the information currently on your Samsung Galaxy S 2.

 

How to root your Samsung Galaxy S2

 

Here’s a step by step guide to rooting your Galaxy S2.

 

First thing you need is a Samsung Galaxy S2 with at least 50% battery.

 

PC

 

1. Download and install Kies on your PC.

 

2. Download the following software from XDA Developers

 

  • Odin - used to flash the insecure kernel
  • Aninsecurekernel - as standard you have a secure kernel on your S2. The insecure kernel opens your phone up to be rooted. When downloading the insecure kernel, choose a kernel number closest to that on your S2. You can see your kernel number in the about section in your settings, as illustrated in the video.
  • Rootingsoftware - this does the rooting itself

 

Phone

 

1. Enable USB debugging on your phone.

 

To do this in Gingerbread go into settings > applications > development > USB Debugging

To do this in Ice Cream Sandwich go into setting > developer options > USB Debugging

 

2. Switch your phone on into download mode

 

To do this, ensure your phone is off, then press the volume down, home and power buttons.

 

You’ll then see a warning screen giving you a couple of options, press volume up to continue.

 

3. Connect your phone to your PC and run Odin.

 

Once connected, run Odin (downloaded earlier). You should notice a yellow box at the top of the Odin window on your PC.

Make sure the check boxes next to ‘Auto-Reboot’ and ‘Reset Time’ are checked.

 

Press the PDA button, in the bottom right and locate the insecure kernel you downloaded. Press the start button. The box at the top should turn green and display the word “Pass”.

 

You now have an insecure kernel on your Samsung Galaxy S2 so you can get your Root on.

 

4. Run the S2Root software

 

With the phone still connected, run S2 Root and simply click root. Your phone will reboot and your phone is now rooted

 

5. Flash a secure Kernel (optional)

 

There will now be yellow triangle on your splash screen - this means you’ve still got the insecure kernel. You don’t have to use an insecure Kernel to retain the benefits of a rooted phone.

 

To get a secure kernel back on, simply download the closest match to your current kernel from here.

 

Repeat step three, putting a secure kernel in PDA instead of an insecure one, press start and you’ll be yellow triangle free.

 

 

 

 

Unlock Samsung Galaxy S II free

 

You want to jump onto the giffgaff network and save loads of money.  You have a top of the line Samsung Galaxy S2 but it's locked to another network.

 

Why spend money you're trying to save unlocking your phone when you could just do it for free?

 

In this video, we're going to show you two different unlocking apps and how to use them.

 

 

 

For starters, you need to have rooted your phone (see the first video and top of this post).

 

If your phone is unrooted, take a look at our step-by-step video to rooting your Galaxy S2. Also, bear in mind, if you follow the instructions in the video you do so at your own risk.

 

Once your phone is rooted, simply open Google Play Shop (or Android Market) on your Samsung Galaxy S2 and download the first unlocking app - [ROOT] GalaxyS2 SIMUnlock.

 

Hit the "SIM unlock code" button, wait a few minutes and the code should appear.

It can take a while, so don't panic if nothing happens.

 

Once you get the unlock code, write it down and keep it safe. Then simply switch off your phone and put in your giffgaff SIM card.

 

You will be prompted to enter your SIM unlock code shortly after you turn it on. Once the code is entered, you should have yourself an unlocked Samsung Galaxy S2 free to make the most of the giffgaff network.

 

There is a chance that this unlock method won’t work. If it doesn’t, don’t try it again as this could be harmful to your phone.

 

Instead, download an alternative unlock tool from the Google Play Store called - GalaxySUnlock.

 

Once installed, open the application and grant it Superuser permision. Once granted, select the unlock tab at the top, select step 1, “Save actual EFS folder”. Once complete, select step 2, “SIM unlock”. Your phone will then need to be rebooted. Once up and running, reopen the application, and select step 3. Create BAK file.

 

On the off chance this method doesn’t work, follow the in-app instructions to get your phone back to its original state.

 

Between these two methods, you should have an unlocked Samsung Galaxy S2. For other methods of unlocking, just follow the links below and enjoy your new found freedom on the giffgaff network.

 

 Have you unlocked your Samsung Galaxy S 2?  Did you use one of the above apps - tell us how you found the process in the comments below.

 

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115 Comments
newcomer

Hi, I'm struggling with unclocking my phone.  

I've managed to download and install Kies, but clicking on the Odin link resulted in a programme called ZoomDownloader being installed, my home page on my broswer being reset to the Delta search engine, and my anti-virus programme detecting and blocking Adware Smiley Sad

I'm also not sure which insecure kernel to download.

Can someone please advise on the right link for the Odin tool and also which insecure kernel to download?

Many thanks!

 

newcomer

Hi, 

 

For anyone else struggling (as I did last night) here with a few pointers. Here is a better link for Odin:

 

http://www.andromint.com/download-odin-latest-version/

 

If after you have unlocked your phone you end up with either being stuck on the boot screen with the yellow triangle or the screen just goes black after the boot screen then follow the instructions here: http://www.youtube.com/watch?v=wwZvMxm4qR8 which shows you how to flash the phone with the latest firmware (so you get Jelly Bean!) which at least worked for me.

 

Regards,

 

Richard

very useful, thank you.

I LOVE YOU GIFFGAFF! YOU ARE THE BEST! IF ONLY I COULD HUG YOU!! Heart Heart Heart

newcomer
Hi,i got a giffgaff sim card last friday and i activated it but for some reason it wont work on my phone, i bought a ten pound goody bag and it said it has been purchased, and it showed my balance, i have chabged all of my setting to giffgaff but it just dosent seem to want to work, my wphone id an unlcoked samsung galaxy s2and should work is there snyway anyone could help mesort my phone so that i can use giffgaff properly with no problems thanks.
newcomer

does this not work anymore because i cannot get an insecure kernel


 




How do I unlock my Orange phone
newcomer

the INSECURE KERNEL LINK is a dead link to hotfile.com which has been closed down by the FBI lol, has anybody got another site where these insecure kernels are?

newcomer
How do i get sim unlock code
newcomer

I need someone to unlock my Samsung Galaxy S2 phone I don't know what to do i need help