How to update Samsung Galaxy S2 to Android 4.3 Jelly Bean

Samsung will update some of its equipment to Android 4.3 (Jelly Bean), the penultimate version of the operating system of Google. Unfortunately, they will be by the way some important items such as the Samsung S2 Galaxy, a phone that was submitted in February 2011, but that no longer has the support of the more advanced versions of Android. There is, however, the possibility of updating running some other risk.

The updates to Android 4.3 (Jelly Bean) do not have the official support of the Samsung, but it is directed to the model GT-I9100, which corresponds to the trade name of the Samsung Galaxy S2. The steps which are listed below will be carried out under the sole responsibility of the user, since Samsung does not take care of any equipment that has been manipulated in this way. This allows users to update their Samsung Galaxy S2 may experience malfunction of the terminal and definitely lose the guarantee provided by the owner company at the time of purchase.

Step 1. Prepare the root the Samsung Galaxy S2

1) First, download the files you will need to do this root. They are: Siyah-v6.0b5-s2 and Odin +1.85. During the process, you may also need these drivers.

2) Make a backup of the EFS folder. Keep it in the card microSD.

3) Make a backup of the entire system of the Samsung Galaxy S2.

4) Remember to have fully charged battery terminal. Any failure or interruption of the installation process may cause fatal errors on your computer.

Step 2. Samsung Galaxy S2 Rootea

1) Turn on the Samsung Galaxy S2 and run Enable USB debugging by clicking the button options development, located in the main menu. Click on the option OK to question Allow USB debugging?

2) Turn off the device by pressing the button you’ll find on the right side of the computer.

3) Now get in the way Download simultaneously pressing the keys Down + Home + Power Volume. After receiving the alert message, click on the button Volume Up to continue.

4) Connect the Samsung Galaxy S2 to the computer through a USB cable.


5) Verify the existence of the files that you downloaded at the beginning. They should be installed on the desktop. Then, unzip the Odin file (through command Extract) and save the resulting file to your desktop. Close Samsung Kies, if you have it open.

6) Open the file Odin check boxes that Re-Partition Lock and Flash are unchecked. Box ID: COM must be marked in yellow (if not, you’ll have to download the drivers that you indicated at the beginning).

7) Click on PDF and select the file with the name: “Siyah-v6.0b5-s2” (what we saved on the desktop then click on the button. Start When the process is finished, closed. Odin).

8) From this point, the terminal will start with the Root done. The Samsung Galaxy S2 is now ready to receive the update. To verify, you will have to restart the terminal and start the Recovery mode (press simultaneously the Up Volume + Power + Home keys).

Step 3. Prepare the installation of unofficial Android 4.3 

1) Download the new files you will need:  10.2 CyanogenMod ROM and Gapps.

2) Keep them in the memory of the Samsung Galaxy S2 and Off.

Step 4. Install Android 4.3 CyanogenMod 10 for Samsung Galaxy S2

1) You need to start again the Recovery Mode (Volume Up + Home + Power).

2) Clean the data through the command Wipe data factory reset, wipe cache partition and dalvik Wipe cache Advanced.

3) Now, in the main menu select the option Install ZIP from SD Card and select the exact location where the files have been stored. The file in question is as follows: “10.2-cm-20130803-UNOFFICIAL-i9100”. Click above to start the installation.

4) Wait for the installation comes to an end and select the file “gapps-jb-20130726”. Continue the process again and wait for it to finish. Finally, return to the Home menu, select the option “Reboot System Now” for the Samsung Galaxy S2 is restarted. This process will take a few minutes, so be patient and wait. At start again, the new ROM should work perfectly.

Before performing this update, you should remind:

  • The process of installing an unofficial ROM is very delicate. So much so, that the Samsung (as all other brands) is not responsible for any damages that the user might cause on the device through these processes. In fact, by modifying the operating system through a set of unofficial data automatically lose warranty.
  • Before making any of these changes, the device should have a fully charged battery. Any disruption could cause irreparable damage to the equipment.
  • The modifications of the operating system and the software of the terminal will be the sole and exclusive responsibility of the user.

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