[Android Q&A, Help & Troubleshooting] tanmay5:
How to flash I9082XXUBMF2 Android 4.2.2 Jelly Bean on Samsung Galaxy Grand Duos GT-I9082 device:

Download the leak Android 4.2.2 Jelly Bean I9082XXUBMF2 file from here "https://hotfile.com/dl/233057193/bed43fc/I9082XXUBMF2_I9082OXABMF2_OXA.rar.html?expire=1" and save it in your PC.

Now, extract the downloaded file and get a tar.md5 file together with a few other files.

Download Odin 3.07 , save it on the PC, extract its content and get Odin 3 v3.07 exe file and other some files.

Power off complete the Samsung Galaxy Grand device.

Now, boot the smartphone into Download Mode. To do that press and keep holding the Home + Power + Volume Down buttons on the same time.

Open Odin3 v3.07.exe file with the administrator rights.

Next, connect the Samsung Galaxy Grand device to PC, for making this use the USB cable while the device is in Download mode.

Now, just look on the Odin interface to make sure that the ID: COM box turn yellow with the proper COM port number and an Added message will be displayed, that means the smartphone is connected successfully,

In case the Added message isn’t displayed try to connect the device on another USB port. If the Odin application still fails to recognize the connection between the device and PC re-install the suitable USB driver once again.

Now, after the connection between Android device and PC is successfully realized, and the ODIN confirmed that you have to select these files extracted from I9082XXUBMF2 folder to flash the same on the smartphone:a) From ODIN click the PDA button, search and load the .tar.md5 file

b) Now, click the Phone button, search and load the file with MODEM in its name.

c) Next, click the CSC button and load the file with CSC in its name.

d) Click the PIT button from ODIN, search and load the .pit file.

Note: Ignore these steps in case the file from step b, c and d isn’t existing.

Important: You have to configure the Odin settings. In ODIN window make sure that the Auto Reboot and F.Reset Time checkboxes are selected. Uncheck the Re-Partition option from ODIN window select it, only in case a .pit file is being used (loaded previously).

Now, when you want to start the installation process, click the Start button in Odin app.

The flashing process should start immediately, and you need to wait about few minutes to be done.

Now, when flashing process is successfully completed, the ODIN app will say a PASS message with a green background very top of the Odin app, and the Samsung Galaxy Grand device will restart automatically.

After restart, you can disconnect safety the USB cord from the PC.

Congratulation, now the Samsung Galaxy Grand Duos should running on the leaked official Android 4.2.2 XXUBMF2 Jelly Bean firmware.

Verify if the new firmware is running on the smartphone, to do that navigate to the following path Settings>> About phone and note down the firmware version running on the smartphone.

Troubleshooting:

In case the Android device gets stuck at the first booting animation or it is entering on a bootloop you have to do:

Place the device in the recovery mode, to do this press and keep holding the Home+ Power + Volume UP buttons on the same time.

Now, from the Recovery Mode select Wipe data/factory reset and after that select wipe cache partition option.

Next, back on the main menu of Recovery Mode and from there select reboot system now option.

Dont forget to hit thanx