big problem with j700h frp lock

hi masters i have j700h in my hand with frp lock i check it with octopus and phone frimware is J700HXXU1APA3 and i check in sammobile that is last build and in this build i try to reset frp by z3x octopus bst gc pro miracle and without any succses i found that if i flash with J700HXXU1AOK5_J700HOJV1AOK6 i can remove frp but as u know downgrading sboot in j7 will kill phone so what i must do pls help great masters