Please help.. Firmware upgrade encountered an error

[mstammyt]

Running stock MK2 on Sprint SPH-L720 Galaxy S4..
I had loaded saferoot to my phone a long time ago, but phone said not rooted.
I downloaded Odin, CF Autoroot, MDLHotspot Mod. to my win8 laptop.

Started Odin to try the hotspot mod and accidently loaded CF Autoroot.

And Ended up with..
.
Firmware upgrade encountered
an issue. Please select
recovery mode in Kies & try again.

Keys does not recognize my S/N


In the upper left corner of firmware encountered issue screen it says..
ODIN MODE
PRODUCT NAME: SPH-L720
CURRENT BINARY: Custom
SYSTEM STATUS: Custom
KNOX KERNEL LOCK: 0X0
KNOX WARRANTY VOID: 0X0
CSB-CONFIG-LSB: 0X30
WRITE PROTECTION: Enable
eMMC BURST MODE: enabled

Here is a pic of the Odin Failure


Im fairly new at this.. if you could please assist me with baby steps?

Thanks so much..
Tammy