N910p Cert write android 6 help

It stuck initializing at RIL:

[ 09/06/2016 19:09:00 ] Operation: Write CERT
[ 09/06/2016 19:09:00 ] Selected model: SM-N910P
[ 09/06/2016 19:09:00 ] Selected port: COM37 SAMSUNG Mobile USB Serial Port
[ 09/06/2016 19:09:00 ] Software version: 25.5
[ 09/06/2016 19:09:00 ]
[ 09/06/2016 19:09:00 ] Checking certificate file… OK
[ 09/06/2016 19:09:00 ] KEY ID: 0772
[ 09/06/2016 19:09:00 ] Waiting ADB device… OK
[ 09/06/2016 19:09:00 ] Reading phone info…
[ 09/06/2016 19:10:00 ] Model: SM-N910P
[ 09/06/2016 19:10:00 ] Android version: 6.0.1
[ 09/06/2016 19:10:00 ] Product code: Not Active
[ 09/06/2016 19:10:00 ] Phone version: N910PVPU4DPE1
[ 09/06/2016 19:10:00 ] PDA version: N910PVPU4DPE1
[ 09/06/2016 19:10:00 ] CSC version: N910PSPT4DPE1
[ 09/06/2016 19:10:00 ] CSC country code: USA
[ 09/06/2016 19:10:00 ] CSC sales code: SPR
[ 09/06/2016 19:10:00 ] HW version: N910P.05
[ 09/06/2016 19:10:00 ] Phone S/N: 00000000000
[ 09/06/2016 19:10:00 ] Modem board: MDM9625M
[ 09/06/2016 19:10:00 ] RF cal date: 2014.11.18
[ 09/06/2016 19:10:00 ] IMEI:
[ 09/06/2016 19:10:00 ] Initialization AT RIL… error