How to Install Official Android 4.1.2 

DXLS8 Jelly Bean Update on Galaxy S2

I9100????

HELLO GUYZZ....

HERE ARE SOME SETPS .BY FOLLOWING THESE SETUP YOU CAN UPDATE YOUR GALAXY S2 I9100G ...

SETP 1

DOWNLOAD REQUIRED FILES 

ANDROID 4.1.2 JELLY BEAN

DOWNLOAD LINK 1

ODIN V3.7

DOWNLOAD LINK 2

STEP 2

 Extract the firmware zip file to a desired location on the desktop to receive a .tar.md5 file and some other files (optional)

STEP 3

 Extract Odin zip file to obtain Odin3 v3.07.exe along with few other files.

STEP 4

Power off the phone and wait for vibration (about 5-6 seconds) to confirm complete device shutdown. Now boot the phone into Download Modeby pressing and holding Volume Down, Home  and Power button together until a construction Android robot icon with a triangle appears on screen. Then hit Volume Up button to enter Download Mode

STEP 5

 Launch Odin3 v3.07.exe that you obtained in Step 3 as anAdministrator, as Admin privileges are required to complete the firmware installation process smoothly

STEP 6

Connect your phone to computer via USB cable. When the device connects successfully, the message saying "Added!" appears in ODIN and theID: COM box will turn yellow with the corresponding COM port number. If the message fails to appear, try reinstalling the phone's USB drivers or changing the port on the computer

STEP 7

 : Choose the following files from I9100GDXLS8 folder that you obtained in Step 2 in Odin using respective checkboxes:

• Select the PDA checkbox, and click the .tar.md5 file
• Tap the Phone checkbox, and select the file named 'modem' (ignore if such file is not found)
• Choose the CSC checkbox, and click the file named 'CSC' (ignore if there is no such file)
• Click the PIT checkbox, and choose the '.pit' file (ignore if the file is missing)

STEP 8

In Odin, enable Auto Reboot and F. Reset Time options by selecting the checkboxes. But, the Re-Partition checkbox must be selected, only if a .pitfile was chosen in the previous step in ODIN

STEP 9

To prevent ROM related errors, verify Step 7 and Step 8 are done correctly. Then hit the START button to begin flashing the firmware

STEP 10

Once the firmware installation is complete, the phone will reboot automatically and soon a PASS message with green background appears in the left-most box at the very top of Odin. Now it is safe to disconnect the USB cable to remove the device from computer.

The Galaxy S2 I9100G is now running on Android 4.1.2 DXLS8 Jelly Bean official firmware. Go to Settings > About Phone to verify the firmware version installed.