Samsung A500W unlock

Hello Team

The update says this model supported for unlock and knox safe etc but I tried two times giving error!

Log is here…..

Chimera Mobile Phone Utility version: 8.68.1313 @ 2015-12-28

Printing phone history

Unlock
28/12/2015
11:30:00
PM

[Unlock phone started]

Gathering phone info…
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-A500W
Sales Code: BMC
Country Code: Canada
Android Version: 5.0.2 [LRX22G]
Build Date: Tue Oct 13 23:35:52 KST 2015
PDA Version: A500WVLU1AOJ3 [october 2015, rev3]
Phone Version: A500WVLU1AOJ3 [october 2015, rev3]
CSC Version: A500WOYA1AOJ3 [october 2015, rev3]
Product Code: SM-A500WZKABMC
HIDSw Version: A500WVLU1AOJ3/A500WOYA1AOJ3/A500WVLU1AOJ3/A500WVLU1AOJ3
Board Platform: MSM8916
Modem Platform: MSM8916
Serial Number: R58GXXXXXXX
Imei: 35157xxxxxxxxxx
Unique Number: CQ300057C005AA2
Connections: AT,MTP
Battery Status: 3.96V (66%)
SIM Status: NETWORK_LOCKED
Knox Version: v30
Warranty Bit: 0

Checking root state…
Not rooted.
There is no backup, because there is no root access.

Unlocking…
Trying on SAMSUNG Mobile USB Serial Port (COM11)
Protocol error.
Unable to unlock.
Finished at local time: [12.28.15 20:09:23]
WorkID: 8527112