You will also need the following tools and drivers if you don’t have them already so download them too:
Step 5. You will need to unzip the ODIN zip file and you will find two files. Run odin3 v1.85.exe file by double-clicking on it.
Step 6. If you see a yellow-highlighted box, you already have Galaxy S4 drivers installed, skip to next step. If you don’t see it, run the Samsung USB driver exe file you downloaded earlier then un-plug/re-plug your micro-USB cable to your Galaxy S4. You should see yellow-highlighted box now.
Step 7. DO NOT TOUCH ANYTHING ELSE but click on PDA button and choose the TWRP recovery file you downloaded earlier. MAKE SURE YOU HAVE DOWNLOADED THE CORRECT TWRP RECOVERY FOR YOUR GALAXY S4 MODEL!!!
Step 8. Hit the Start button and this will flash TWRP recovery onto your Galaxy S4.
Step 9. Once you see “PASS!”, you have successfully flashed TWRP recovery and your phone will reboot.
Step 10. Once your phone reboots, copy the CWM SuperSU zip file you downloaded earlier to anywhere on your Galaxy S4.
What is a Custom ROM?
A custom ROM is a custom, modified operating system that you can install on your Android device. Basically it's like installing Windows OS on a Macbook. By installing a custom ROM, you can bypass stock factory settings like locked hotspot tether, install new Android versions early, or even convert your phone into another OS.
With a custom ROM, you can really maximize the capabilities of your smartphone by adding custom features that have been developed by open source developers.
How to Install Custom ROMs
First, you will need to root your device, if it is not rooted yet, follow our root tutorial and root your phone.
Once rooted, you should have TWRP installed on your phone. Installation of a custom ROM is easy if you learn the basic of it. If you don't know how to install custom ROMs using TWRP recovery, see our tutorial on How to Install Custom ROM using TWRP!