SM-G930P 8.0.0 (Android Security patch )March 1,2019 UNLOCK SOLUTION PLEASE

SM-G930P 8.0.0 (Android Security patch )March 1,2019 UNLOCK SOLUTION

SIM INVALID SHOWING WHEN I M PUTING THE SIM THIS MOBILE
MEANS I HAVE UNLOCK THIS MOBILE
BUT PROBLAM IS DO TO LATEST SECURITY PATCH I M NOT ABLE TO DOWNGRADE THIS MOBILE

WHEN I M FLASHING ERROR IS COMING
fused 9 Binary 4

so kindly to be helped how to slove this problam
is there any chance to root our unlock any other method kindly assist me

I want the combination file for my device
G930PVPS9CSD1 8.0.0 VERSION
(Android Security patch )March 1,2019