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Help Downgrading problem

Lana30

Android Enthusiast
Hi Friends,
A friend of mine wrote to me with the following issue, any suggestions?

He tried downgrading from Lollipop to Kit Kat using Odin, but it always says “FAIL”
In the top left corner it reads:
ODIN MODE
PRODUCT NAME: SCH-I545
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Official
REACTIVATION LOCK: Off
CSB-CONFIG-LSB: 0x30
SECURE DOWNLOAD: ENABLE
WRITE PROTECTION: ENABLE
eMMC BURST MODE: enabled

The Odin response I get is:
Odin engine v(ID:3.1005)..
File analysis..
SetupConnection..
Initialzation..
Get PIT for mapping..
Firmware update start..
SingleDownload.
aboot.mbn
NAND Write Start!!
FAIL! (Auth)

Complete(Write) operation failed.
All threads completed. (succeed 0 / failed 1)

What is this all about? Thanks in advance.
 
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