write cert error samsung g900f

Checking CERT file... OK
KEY ID: 0478
Waiting ADB device... OK
Reading phone info...
Model: SM-G900F
Android version: 6.0.1
Product code: SM-G900FZKAPHE
Phone version: G900FXXU1CQB2
PDA version: G900FXXU1CQE1
CSC version: G900FPHE1CQE1
CSC country code: SPAIN
CSC sales code: PHE
HW version: MP 1.100
Phone SN: RF8G32BP3SR
Modem board: MSM8974PRO
Security patch: 2017-05-01
RF cal date: 2015.03.28
IMEI: 359877061719793
Writing AT RIL... OK
Initialization AT RIL... root required
Checking Super user right... true
Initialization AT RIL... OK
Bypass MSL... error (2)
First reset MSL

Done with Samsung Tool PRO v.31.3