Sprint Note domestic unlock doesn’t work

Welcome to Octoplus/Octopus Box Samsung software version 2.1.7

Platform: Samsung Android
Selected port: COM31
Selected model: SM-N910P
Detected phone model: SM-N910P
Firmware compiled date: Thu Jul 16 20:00:24 KST 2015
PDA version: N910PVPU4COG5
CSC version: N910PSPT4COG5
SW version: N910PVPU4COG5
Phone SN: 00000000000
Android version: 5.1.1 (LMY47X)
Checking Root:
Phone is not Rooted.
Installing service app…
Unlocking phone…
Phone is successfully unlocked
To finish the operation, please restart the phone via phone’s menu.

This method is not working for domestic unlock. I am unable to enable gcf mode too. Any idea?