read / write cert fail on G925W8VLU4CPG2

Read / Write Cert on G925W8 fail
firmware 6.0.1 G925W8VLU4CPG2

Please Help
Waiting ADB device… OK
Reading phone info…
Model: SM-G925W8
Android version: 6.0.1
Product code: SM-G925WZKABMC
Phone version: G925W8VLU4CPG2
PDA version: G925W8VLU4CPG2
CSC version: G925W8OYA4CPG2

CSC country code: Canada
CSC sales code: BMC
HW version: REV0.1
Phone S/N: R58H62KHQNM
Modem board: SHANNON333
RF cal date: 20160617
Checking Super user right… true
Initializating zTool… OK
Running zTool, please wait…
Start… OK
Init… OK
Generate and check client proof… OK
Verify proof by client… OK
Reading data… error (9)
Done with Samsung Tool PRO v.26.5