Hi, Thanks everyone for all the help. I have rooted my Sprint Galaxy S4. Rooted using Odin. I have installed SuperSu (Chainfire) v 1.41 and Titanium Backup PRO v1.2.3. I would like to learn how to do the nandroid recovery. If I brick the phone learning to modify files, I can recovery back to latest back up. What I understand to do nandroid recovery is I need to download app Goomanager and then TWRP. Is this correcto. This is where I am getting confused/lost. I don't want to brick phone without having a recovery option, so I am holding here. Sprint, Galaxy S4, SPH-L720. Android 4.2.2 Baseband - L720VPUAMDL Kernal 3.4.0-529760 Build JDQ39 Any assistance or point in right direction would be appreciated. Thanks.