Downgrade Oreo To Nougat J7 Prime G610F

[RaHuLSiNH1923]

Hi guys its possible to downgrade oreo to nougat on my j7 prime.?
Please help ne 
I am yesterday tried but its shows error (Repatriation Faild / and in download mode: Secure check fails:pit).

I don't know whats the problem with in but please help me i want to go back on nougat.

Thanks in advance please reply fast.

I am posted pic of both firmware Oreo And nougat.
And i also posted my device information.

[wwefz]

it's not possible

[Sahilkohlip]

yes via odin

[RaHuLSiNH1923]

but show error

[Anonymous]

Well you cant. Cause you signed up for anti roll back policy at the time of updation.
Google for any work around for this.