G928f frp reset failed

G928f 5.1.1 I tryed to flash but still the same pb. i have to force restart and after restart FRP still on.
[Reset FRP lock started]

Processing…
Waiting for download mode.
Connecting.
Initializing.
Reading PIT.
Reseting.
Restarting phone.
Unable to restart. Please restart phone manually!
Please install a stock firmware.

Finished successfully.
Finished at local time: [01.15.16 21:29:57]
WorkID: 8815404