When installing Lollipop, auth fail on odin, what should I do?

[AC Question]

when installing lollipop, auth fail on odin

<ID:0/005> Added!!
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> SetupConnection..
<ID:0/005> Initialzation..
<ID:0/005> Get PIT for mapping..
<ID:0/005> Firmware update start..
<ID:0/005> SingleDownload.
<ID:0/005> aboot.mbn
<ID:0/005> NAND Write Start!!
<ID:0/005> FAIL! (Auth)
<ID:0/005>
<ID:0/005> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)

im trying to install lollipop 5.0.2 on my samsung galaxy s5+ with odin, but it keeps giving this error. what am i doing wrong?

 

[Rukbat]

Re: when installing lollipop, auth fail on odin

Make certain that you have the right files for your model number S5. If you do, you could have a hardware failure (bad NAND - which is the phone's storage).