How do I flash a Samsung device using the distribution on samsung-updates.com? I'm hoping to flash the stock rom back onto my device so I can update the PRL. I downloaded the file on samsung-updates.com. The file that I download was found "Firmware archive" for Sprint's SPH-L720 (Galaxy S4).

A comment said the SPR was for regular users and the XAS one was for engineers. Not exactly sure what that means, but I downlaoded the SPR file changelist 1927016


  SPR-L720VPUEMJA-20131030154609.zip


Now when I look inside I have two files,


L720VPUEMJA_L720SPTEMJA_L720VPUEMJA_HOME.tar.md5
SS_DL.dll


What does these files do? Why do I do with the .dll? How do I flash my device with it? Do I simply load the .zip into Clockworkmod and boot up? Should I, or should I not wipe cache and Dalvik after I do that? I've already backed up my current version of CM and data using CWM.
Is SPR-L720VPUEMJA-20131030154609.zip stock ROM? If yes, you can use the Odin tool to flash that ROM.

I assume have already installed Samsung Kies (so phone drivers are installed). With this done, open Odin (don't change any settings). Load L720VPUEMJA_L720SPTEMJA_L720VPUEMJA_HOME.tar.md5 into the PDA section into the ROM. Put your phone into Download Mode (Vol Down + Home + Power), and plug it into Odin. Odin should be able to detect that phone. When it does, start the flashing process.