Samsung Galaxy E5 (SM-E500YZ) Firmware Overview
The archive lists 3 official builds for the Samsung Galaxy E5 across 1 region (CSC). The newest one is E500YZZTS1AQA1, released February 16, 2017 with Android 4.4.4. It is a security update on bootloader binary 1: once a phone runs it, firmware with a lower binary can no longer be flashed (how to read a build number).
How to Flash SM-E500YZ Firmware
Put the Samsung Galaxy E5 into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with the same or a higher Bit than the one installed — a lower bootloader binary will be rejected.