I downgraded to 6.0.1 but this error still appears:
Code:
Operation: Repair
Selected model: SM-G920F
Software version: 28.9
If you are looking for 'Repair Network' function then you should use 'Patch Certificate'
Waiting ADB device... OK
Reading phone info...
Model: SM-G920F
Android version: 6.0.1
Product code:
Phone version: G920FXXU5DPL3
PDA version: G920FXXU5DQA7
CSC version: G920FXEG5DQA2
CSC country code: Germany
CSC sales code: XEG
HW version:
Phone SN: 00000000000
Chip name: EXYNOS7420
Modem board: SHANNON333
Security patch: 2017-01-01
RF cal date:
IMEI:
Checking Super user right... true
Reading NV data... OK
Checking NV data... error
Security damaged (1)
Done with Samsung Tool PRO v.28.9