im not to worried about the warranty but. theres are the steps the guide says to take
Step 1: Download the firmware package (Philippines – Globe, Philippines – Sun Cellular, Philippines – Open Line, Philippines – Smart and Malaysia) and extract the zip file.
Step 2: Download Odin v3.09, and extract the zip file.
Step 3: Run Odin3 v3.09 as an Administrator.
Step 3: Restart the Galaxy S4 and put it in Download Mode by pressing and holding Volume Down, Home and Power buttons.
Step 4: Connect the Galaxy S4 to the computer via the USB cable and wait until a blue sign appears in Odin.
Step 5: Click on the AP button in Odin and select the .tar.md5 file that was extracted in Step 1.
Step 6: In Odin, ensure that the Auto Reboot and F. Reset Time options are checked, and not the re-partition check box.
Step 7: Click on the Start button in Odin to begin the installation process.
Step 8: After the installation is complete, the device will restart automatically.
Step 9: Once you get the Samsung logo on the home screen, you can unplug the device from the computer and close Odin.
That is all you have to do. The Galaxy S4 LTE should now be running on the latest Android 4.4.2 KitKat XXUFNBE.
I Have downloaded Philippines – Open Line firmware and the guide is for the GT-I9505. would this work for me and how to i do a clean install