Install Jelly Bean 4.1.2 Official Galaxy S2 Root Tutorial Update Stock
Now available the new version of Android Samsung stock 4.1.2 for Galaxy S2 powerful and Samsung released a few days ago on his official website that leak firmwares version for those you want to install it safely you will have to see this video tutorial explained step by step.
It is important not to skip any of the steps for the installation is successful.
For all those that you have released your device by an application be warned that this release and will lose again blocked, but in this tutorial you also have the solution to this. Everything for your Galaxy S2 looks brand new operating system from Google, Android 4.1.2. And with the assurance that it is version released by Samsung official signature.
If you want to see how it works in this video …
To make this process you should have your device rooted, with root access and superuser. If you do not have it and want root, see this video tutorial that explains step by step how to do it.
Before installing a rom or a new system is highly recommended to make a copy of our current system. To make a copy of our visit this little two-minute tutorial in which you can see how to make a copy of your current rom or system and avoid when installing the new system can not recover the above
THIS IS NOT A FINAL VERSION OF JELLY BEAN OFFICIAL IS A LEAK, can be mistaken, I AM NOT RESPONSIBLE FOR BRICKS, if you follow the step by step tutorial need not be problems.
Download link: (download and unzip)
STEP 1 PREPARATION
SAVE EFS FOLDER
IF YOU HAVE THE PHONE APP RELEASED BY THIS RELEASE AND WILL LOSE THIS, and if you still ICS ALSO NOT SOLVE! YOU HAVE TO RESTORE THE FOLDER SAI (END OF VIDEO SOLUTION).
Download this ZIP file link that contains everything needed
Unzip the file and copy it to the phone memory everything except folders 3 and 4. Folders, 3 and 4 must copy them to your computer.
STEP 2 .
Thorough cleaning of your phone to avoid errors after upgrade.
To do it from the 4 recovery wipes (DATA WIPE, WIPE CACHE AND WIPE BATTERY STATS DALVIK)
CAUTION those with STOCK ROM ANDROID 4.0.4 USING A KERNEL SECURITY TO PREVENT BRICKS. For example you can use the latest version of Siyah kernel is safe if they have any modified kernel is also advisable to clean installing Kernel cleaner that you downloaded. Useful for all those that you have Siyah kernel, Dorimanx, Cyanogenmod, Speedmod, Apollo or any other than stock or CF-Root.
If you pass this cleaner having a stock kernel does not matter.
Step 3 Install:
Power on download mode holding down volume keys + home + power
Now run Odin, connect your phone to your computer via USB.
We make sure that the box ID: COM is yellow up left and we mark that device is connected
Click on “PDA” and select the file: CODE_I9100XXLSJ.tar
Press “PHONE” and select the file: MODEM_I9100XXLS6.tar
Press “CSC” and select the file: CSC_HOME_OXX_I9100OXXLS1.tar
The Re-Partition box should be unchecked
automatically restarts the phone and disconnect the phone from the computer and see if it boots.
Jelly Bean installed
STEP 4: rooteo RECOVERY AND INSTALL MODIFIED.
We light the terminal in Download mode (POWER + HOME + VOL) and connect USB cable to PC
Run ODIN and make sure that the box ID: COM is yellow arrriba left and we mark that terminal is connected
Press the button “PDA” and select the file: Philz-cwm6-XXLSJ-OXX-3.1.tar
Press the button “Start”
We have recovery for S2 with Jelly Bean
STEP 5: ROOT
We turn off the terminal and we started in recovery mode and flasheamos Philz-cwm6-XXLSJ-OXX-3.1-signed.zip from recovery in the new “install zip from sdcard”, reboot and have root and cwm.
STEP 6: RECOVERY FOLDER EFS – loss of signal (if your phone has been lost signal )
Install and run it again RootExplorer
Copy the folder that is inside the EFS ZIP copy we made at the beginning and the current overwrite is in root. But before you overwrite the box above on putting R / W and change it to R / O to let you overwrite it.
We let down Power until you restart with this should be restored EFS folder.
STEP 7: ALTERNATIVE RELEASE
If this does not work accompanying an application to unlock again but only in extreme cases that we have worked to restore the EFS folder.
Video tutorial all steps:
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