Keep getting error in write cert n910l


[ 10/31/2016 10:29:00 PM ] Operation: Write CERT
[ 10/31/2016 10:29:00 PM ] Selected model: SM-N910L
[ 10/31/2016 10:29:00 PM ] Software version: 27.0
[ 10/31/2016 10:29:00 PM ]
[ 10/31/2016 10:29:00 PM ] Waiting ADB device… ok
[ 10/31/2016 10:29:00 PM ] Reading phone info…
[ 10/31/2016 10:29:00 PM ] Model: SM-N910L
[ 10/31/2016 10:29:00 PM ] Android version: 6.0.1
[ 10/31/2016 10:29:00 PM ] Product code:
[ 10/31/2016 10:29:00 PM ] Phone version:
[ 10/31/2016 10:29:00 PM ] PDA version: N910LKLU2DPD6
[ 10/31/2016 10:29:00 PM ] CSC version: N910LLUC2DPD6
[ 10/31/2016 10:29:00 PM ] CSC country code: KOREA
[ 10/31/2016 10:29:00 PM ] CSC sales code: LUC
[ 10/31/2016 10:29:00 PM ] HW version:
[ 10/31/2016 10:29:00 PM ] Phone SN: R39FC022MA
[ 10/31/2016 10:29:00 PM ] Chip name: EXYNOS5433
[ 10/31/2016 10:29:00 PM ] Modem board:
[ 10/31/2016 10:29:00 PM ] RF cal date:
[ 10/31/2016 10:29:00 PM ] IMEI:
[ 10/31/2016 10:29:00 PM ] Checking Super user right… true
[ 10/31/2016 10:29:00 PM ] Initialization zTool… ok
[ 10/31/2016 10:29:00 PM ] Running zTool, please wait…
[ 10/31/2016 10:29:00 PM ] Start… ok
[ 10/31/2016 10:29:00 PM ] Initialization… ok
[ 10/31/2016 10:29:00 PM ] Generate and check client proof… ok
[ 10/31/2016 10:29:00 PM ] Verify proof by client… ok
[ 10/31/2016 10:29:00 PM ] Reading data… ok
[ 10/31/2016 10:29:00 PM ] HWID: 17 00 00 EA 11 F1 A0 E3 21 F1 A0 E3 31 F1 A0 E3
[ 10/31/2016 10:29:00 PM ] Checking certificate file… ok
[ 10/31/2016 10:29:00 PM ] KEY ID: 0760
[ 10/31/2016 10:29:00 PM ] Can not identify type of modem