Anyone who owns the Samsung Galaxy S2 international handset can now get an update to Jelly Bean 4.1.2. The firmware is unbranded and it arrived in China and Taiwan with the name of Android 4.1.2 ZSLSE. It brings with it the Chinese language pack and providing you are the owner of the unlocked version of the device, you can go ahead and install it.
Of course no changes have been made the ROM and so you don’t get ClockWorkMod with it.
The firmware has new TouchWiz interface, along with S Cloud, Project Butter, Smart Stay, Direct Call and Pop up Play. It also comes with a brand new lock screen. Those who update to the ROM will get 50GB of Dropbox storage, along with updates to Google Now, new notification bar and more than one home screen.
The firmware update is for the i9100 version of the Samsung Galaxy S2 only.
You should make sure that you have 85% battery left and that USB debugging is enabled. This you can do by heading to Settings and developer options.
Bear in mind that once you update you will lose the root but you can go ahead and root again.
Check out the instructions below and follow them with care to make the Jelly Bean 4.1.2 update to your Samsung Galaxy S2.
Step One: Download 4.1.2 ZSLSE onto your PC and extract the .zip file.
Step Two: Download ODIN v1.85, as you’ll need this to install this update.
Step Three: Turn your phone off and boot it up into Download Mode by pressing and holding the volume down and home button, then hit the power button until you see the Android robot icon and a triangle. Press power again to enter Download Mode.
Step Four: Launch ODIN on your PC and connect your phone to the PC while it’s in Download Mode.
Step Five: When your phone is connected, you’ll see one of the ID: COM boxes flash yellow, with the appropriate COM port number. This might take a while.
Step Six: Select the files that you want to install on your Galaxy S2 – you can find these in the files you extracted in Step One.
Check the ‘PDA’ box and choose the file ‘.tar’ or ‘md5’.
Choose the ‘Phone’ checkbox and select the ‘MODEM’ file. If you can’t see this file, ignore this step.
Choose the ‘CSC’ box and select the ‘CSC’ file. If this file isn’t there, ignore this step.
Check the ‘PIT’ box and choose the ‘.pit’ file. If you don’t see this file, skip this step.
Step Seven: Enable Auto Reboot and F. Reset Time in ODIN. If you see a Re-Partition option, ONLY select it if you chose a ‘.pit’ files in Step Six.
Step Eight: Press ODIN’s start button and the firmware installation will start. It might take a few minutes, so don’t worry.
Step Nine: Once the installation is done, the Galaxy S2 will reboot. When you see the homescreen, unplug your Galaxy S2 from the PC and try out Jelly Bean 4.1.2 and all its benefits!