Samsung Galaxy S2 GT-I9100 device has received the latest Over-The-Air Android 4.1.2 Jelly Bean VJMS3 official firmware from Samsung. This latest firmware has been launched starting from Brazil and to other several countries.
It can be manually flashed on any unlocked international variant of Galaxy S2 model number GT-I9100 devices. It is always recommended flashing the newest official firmware for your Android device, as it comes with bug-fixes over its predecessor firmware and the latest features and applications.
This article will teach you during a step by step instructions guide how manually download and install the latest Android 4.1.2 Jelly Bean VJMS3 firmware for Samsung Galaxy S2 GT-I9100.
Pre-requisites:
- The latest Android 4.1.2 Jelly Bean VJMS3 firmware and all instructions listed here work only with Samsung Galaxy S2 model number GT-I9100 model only. So, don’t use it for any other variant or similar device with other models version.
- In order to verify the model number for the device where the new firmware will be installed navigate to the next path: Settings > About Phone.
- Take the back up all data stored into device’s internal memory, if you have installed a custom recovery tool such as CWM or TWRP recovery; perform Nandroid backup – full back up for actual ROM that is running on S2 device.
- Download and install the appropriate USB drivers for the S2 GT I9100 USB drivers on the PC, you can download the same from here.
- Now, from the Settings > Developer Options or Settings > Applications > Development enable the USB debugging mode.
- The S2 GT I9100 smartphone should be above 80% battery charge.
- Make sure that the S2 device and its bootloader is unlocked.
- All instructions and information listed here are meant for instructional, educational and reference purpose only. Our Android Source team cannot be held responsible or held liable for any data lose or if device is bricking or damage during or after the manually official firmware installation. Use this guide only on your own risk.
How to Flash Official Android 4.1.2 VJMS3 Jelly Bean Firmware on Samsung Galaxy S2 GT-I9100
- First, download the official firmware file from here and save it to your PC
- Second, download the ODIN v3.07 on your PC and save the same to PC.
- Now, extract the downloaded firmware zip file to your PC, preferably on the desktop and make sure that you will obtain a .tar.md5 file and some files in some cases.
- Next, extract Odin zip file and make sure, you get Odin3 v3.07.exe and other additional files.
- Now, turn off the smartphone and completely
- Boot the S2 device into Download Mode. (For doing that press and keep holding the Volume Down + Home + Power buttons simultaneously until an Android icon like a robot is displayed and, press the Volume UP button, the Download Mode appears.
- Now, open the ODIN app by launching the ODIN v3.07.exe file that you have already extracted.
- While the smartphone is connected in Download Mode, connect it to PC using the USB cable.
- Now, look on the ODIN interface and when the smartphone is recognized successfully, a notification message says “Added!” and additionally the ID: COM together with a port number box will be colored yellow
- Note: In case the ODIN doesn’t display the added message, change the USB port to the PC and reinstall the suitable USB drivers once again on the PC.
- Now, chose and load the necessary files for install the new firmware as below:
- From ODIN app select the PDA checkbox and then browse and load the ‘.tar.md5? file
- Now, select the Phone checkbox and then browse and load the file that contains the modem word in its name.
- Click on the CSC checkbox and select the file that named ‘CSC’
- From the ODIN app click the PIT checkbox and load the ‘.pit’file.
Note: Ignore the steps b, c and d if there is no such file.
- Important: In ODIN app, make sure that the Auto Reboot and F. Reset Time options are enabled by selecting the checkboxes, but the Re-Partition checkbox must be unselected, select the Re-Partition checkbox only id a .pit file was loaded into ODIN in the above corresponded step.
- When all the steps are done correctly, press START button from ODIN to start the installation firmware process.
- Now wait until the firmware flashing process is done and the smartphone reboots automatically.
- The flashing process is completely done when a PASS message with a green background is displayed in ODIN interface (Left-most box at the very top of the ODIN app).
- Now you can disconnect the USB cable from the PC
That’s it; you successfully learned how manually update the S2 GT-I9100 with the latest stock Android 4.1.2 I9100VJMS3 Jelly Bean OTA firmware.
Verify the firmware version that is running of the phone by navigating to: Settings > About Phone:
Troubleshooting – In case the smartphone is stuck or is entering on a boot loop:
- Boot the smartphone into Recovery Mode by pressing and keeping hold the Volume UP + Home + Power buttons simultaneously.
- Now, from the Recovery Mode perform a Wipe data/Factory Reset as well as Wipe Cache Partition.
- When the wipe process is done, return on the Recovery Mode main menu and from there choose the reboot system option.
Note 1: For navigating between Recovery Mode options, use Volume Keys, and for selecting an option in recovery use Power Key.
Note 2: When a wipe task is applied, all of the device’s internal memory data will be erased, but not the data on the SD card memory.
