A510F can not read cert, still error(


Operation: Read CERT
Selected model: SM-A510F
Software version: 26.0

Waiting ADB device…
Please, allow USB debugging on phone… OK
Reading phone info…
Model: SM-A510F
Android version: 5.1.1
Product code: SM-A510FZKAORX
Phone version: A510FXXS2APE1
PDA version: A510FXXS2APE2
CSC version: A510FOXX2APC1
CSC country code: Slovakia
CSC sales code: ORX
HW version: MP 0.200
Phone S/N: R58H12G89RX
Modem board: SHANNON310
RF cal date: 20160120
IMEI:
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.26.0

any advice?