How to downgrade Samsung Galaxy S6 from Marshmallow to Lollipop Version

Hey friends we are again here with our new trick that will take you from buggy Marshmallow to a stable Lollipop version.

Remember : This tutorial is for only Samsung Galaxy S6 and a few other Samsung devices. If you guys are disliking Marshmallow in Samsung Galaxy S6 then you have to just go through these simple steps and you can easily downgrade your Smartphone to Lollipop Version.

So without wasting your time friends, let's start with the tutorial :

Step 1 : Download, Extract and Install the Samsung USB Drivers and then reboot your phone.
Step 2 : Enable Developer Mode on your smartphone (visit here to see how to enable developer mode).
Step 3 : Enable USB Debugging on your Galaxy S6 (from developer mode).
Step 4 : Download Samsung Kies and back up your phone.
Step 5 : Download Lollipop Firmware from Sammobile and unzip it.
Step 6 : Download and extract Odin.
Step 7 : Power off the phone.
Step 8 : Press and hold the following buttons in order : Volume Down + Home + Power. Keep holding them until you see a screen that says "Warning!!!" at the top and then press the Volume Up button to continue.
Step 9 : The next screen will show the Android logo and say "ODIN MODE" at the top left.
Step 10 : Run Odin as administrator. Under the Options, only "F. Reset Time" should be checked.("Uncheck"Auto Reboot").Step 11 : Click the "AP" (or "PDA") box and browse for the extracted firmware file.
Step 12 : Now connect your phone to your computer via USB.
Step 13 : Wait until you see your phone plugged in.
Step 14 : Press Start in Odin. 
Step 15 : When Odin is successfully finished, you will see in the Message box "All threads completed" (it may take several minutes to complete so be patient and don't turn on the phone.
Step 16 : Press in order: Volume Up + Home + Power until you see an Android screen.Step 17 : Use Volume Down to scroll to "wipe data/factory reset" and press Power to select it. (Make sure you have backed up your phone!)
Step 18 : On the next screen, scroll to Yes, select it, and your phone will reset.
Step 19 : When it's done, select reboot system now and it will reboot.
Step 20 : Restore your data using Samsung Kies. This will restore most of everything; you may need to re-setup the home screens and some of your settings.

And that's it, you are done now ask for any queries if you have and if don't just share this post and enjoy your Smartphone :)