Odin error : NAND Write Start!! FAIL! (Auth) can't flash stock rom SM-G530H
I'm pretty sure you're in Recovery mode. Put your device in Download mode (turn your device off, press and hold volume down and home buttons, then press and hold the power button until the download warning appears, then volume up to continue, connect USB and run Odin) to flash with Odin.

Putting your phone in Recovery mode is done the same way except volume up is pressed with the home key instead of volume down.