Here’s an in-depth tutorial that shows you how to use Odin to install Android firmware, so make sure you go through it carefully before you proceed further.
This is by far the simplest option if you want a specific firmware installed on your Samsung Galaxy device.
Connect your phone to the computer, and put the ROM file to the folder downloaded_rom in the SD card.
Open Updater on the launcher, press the Menu button – Select installation file.
However, since the option is only applicable to Galaxy devices, there are other ways to update your device firmware right now.
Almost every manufacturer in the smartphone industry provides updates through their website.
You can also use the library for Android firmware download from any region across the world if your specific region isn’t available.