G920F read cert error

Operation: Write CERT
Selected model: SM-G920F
Software version: 24.3

Waiting ADB device… OK
Reading phone info…
Model: SM-G920F
Android version: 5.0.2
Product code:
Phone version:
PDA version: G920FXXU1AOCY
CSC version: G920FEVR1AOC1
CSC country code: UK
CSC sales code: EVR
HW version:
Phone S/N: RF8G400640P
Modem board:
RF cal date:
IMEI:
Checking Super user right… true
Initialization AT RIL… error

Done with Samsung Tool PRO v.24.3
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excuse "write cert error"
Any Help please