how to unlock r750a with octoplus?


how to unlock r750a with octoplus?

plz tell me steps and setps

how to connection R750A with octoplus software

Z3X LOG

Waiting SDB device… OK
Reading phone info…
Model: SM-R750A
Build: R750AUCU1AOB1
Tizen version: Tizen release 2.2.0 (Magnolia)
Checking Super user right… false

Done with Samsung Tool PRO v.23.9

OCTOPLUS LOG
INFO : 2015/12/28 16:40:38 > Platform: Samsung Android
INFO : 2015/12/28 16:40:38 > Selected port: COM4
INFO : 2015/12/28 16:40:38 > Selected model: SM-R750A
INFO : 2015/12/28 16:40:40 > Phone was not found on the selected port!
INFO : 2015/12/28 16:40:41 > Searching for USB diagnostic port…
INFO : 2015/12/28 16:40:41 > Connecting to phone on COM4
WARN : 2015/12/28 16:40:42 > Phone connection failed
WARN : 2015/12/28 16:40:42 > No diagnostic ports found!