SM-G925F DRK Problem

[Tap@s]

Already Flashed Many Version, V6.0.1 & 7.0

Always Boot Loop & Restarting.

Recovery says First Install DRk,

How can I solved this Problem/?

Any Experts Help me...

 

[Octopus Box]

Hello.

Try to do the following:

1. Flash proper Combination firmware.
2. Fix DRK via UART.