G935f how to downgrade 8.0 to 7.0 plzz its urgent

[arsallove]

Can anybody know i have update G935F 7.0 to 8.0 after nupdate emergency call showing
I tired to back downgrade 7.0 but not done erroe then downgrade 7.0 not flsh on odian or z3x but 8.0 fiemware flash not 7.0
Can any body know how to downgrade G935F plzzz....

 

[gsmnumanmobile]

Can anybody know i have update G935F 7.0 to 8.0 after nupdate emergency call showing
I tired to back downgrade 7.0 but not done erroe then downgrade 7.0 not flsh on odian or z3x but 8.0 fiemware flash not 7.0
Can any body know how to downgrade G935F plzzz....

binary verion

 

[arsallove]

binary verion

U3