SM-G925A unlock fail pls help


Gathering phone info…
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-G925A
Timezone: Pacific/Tongatapu
Android Version: 6.0.1 [MMB29K]
Build Date: Fri Jul 1 15:06:15 KST 2016
PDA Version: G925AUCS4CPG1 [july 2016, rev1]
Phone Version: G925AUCU4DPH5 [august 2016, rev5]
Board Platform: EXYNOS5
Modem Platform: SHANNON333
Serial Number: R38G509NH0T
Imei: 357741061547129
Battery Status: 3.80V (23%)
Network Type: GSM
SIM Status: ABSENT
Knox Version: v30
Warranty Bit: 0
Security Patch: 2016-07-01

Unlocking…
Please unlock screen if closed.
Trying on SAMSUNG Mobile USB Modem (COM579)
Processing. Be patient! Do NOT disconnect the phone!
Please unlock screen if closed.
Try firmware that contains an older modem!
Protocol error.
Finished at local time: [11.01.16 09:58:27]
WorkID: 14662812