Error in updating

[SachinJindal]

i am using android 7.0 in my s7 edge.
when i am trying to update it.. i got error message ...
plz reply what to do

[MohamedRezeem]

this is showing because you have rooted your device

[SachinJindal]

??

[Markiplier]

you have rooted your device so this message has popped out

[Karan]

unroot your device then try

[SachinJindal]

how to unroot... plz reply

[Rohitz]

u hav rooted device..?

[Abdullah]

download official software from sammobile then flash with odin

[Abdullah]

here is link https://www.sammobile.com/firmwares/database/SM-G935FD/

[Mesbah3575]

this is best way