Step 1. Power off your Galaxy S5. Then hold down Volume Down, Center Home, and Power buttons together for about 3-5 seconds until you see a warning screen like shown below:
Step 2. Hit Volume Up and you should see “Downloading…” screen like below.
Step 3. Next connect a USB 2.0 micro-USB cable from your Galaxy S5 to your computer.
Step 4. You will need to download the following three files, ODIN, Philz Touch CWM recovery, and SuperSU:
Once downloaded, unzip the Odin3v185.zip and you should get a folder with executable EXE program. DO NOT UNZIP other files, leave them in their zip file states.
Step 5. Double-click on the file “odin3 v1.85.exe” to start the ODIN program. You should see a yellow-highlighted box with a random COM number. If you do see this, you are good to go. If you don’t see it, you need to install Samsung USB drivers. Download and run the Samsung Galaxy S5 USB Driver program, reboot and repeat this Step.
Step 6. Next, choose “PDA” button and find the Philz Touch CWM recovery file you downloaded earlier.