ok, need some help over here FRP+DRK SM-G928G

i get 1 mobile with this,

FRP= ON
DRK fail, so, need a combination file., and get this

combination_fa51_g928gddu1aok1_cl5994902_qb7252813 , AND, !!

don’t work, fail to write

"SW REV. Check fail Device:3 Binary: 1"

and try the "NEW frp reactivation" and instafail, don’t wotk in download mode,

so im stuck here, i read some forum i need a ENG boot, to fix DRK, bt i can’t get. if any have and try to sellme the file, plz ignore.