@ LILA SHANKAR,
Have you rooted phone as it is stated in the manual?
Quote:
Unlock- Close all third-party programs which may interfere with the phone.
- Turn the rooted phone ON and wait until it fully starts up.
- Make sure that USB debugging is enabled on your device.
- Select "Android ADB" platform from the tab menu in the upper left side of the software.
- Go to "Unlock" tab.
- Connect the phone to PC with micro USB cable.
- Select " Adb interface" in the ports selection tab.
- Press "Unlock" button.
- During the operation the phone may reboot once, so don’t disconnect it before finishing the service operation and strictly follow the Sigma commands!
- Message "Unlocking phone… Done" indicates that procedure has been completed successfully.
- Wait for the message "Restarting phone... Done" to appear in Sigma dialog window; only after that you can disconnect the phone.
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Best Regards
GSMServer team 