Unable to Install Original Firmware on Samsung s+9 G965N

I actually bought the phone. But unfortunately I found that it was a custom room inside. The phone was not working properly so I decided to change the ROM.
I would like to know how to flash the original firmware of samsung s9 + G965N. I downloaded the original firmware on SamMobile but when I install it is not successful.
I opened the option for developers, I waited more than a week but this menu still does not appear.
Thank for help me

Go into download mode and see what model number it says.

model is SM-G965N in donwload mode. Inside the phone the model is F

1 Like

Try flashing an F rom then, the seller must have changed it to F. They are compatible once changed.

2 Likes

okey. I wil try and get back to you. Thanks so much for your help :blush: :blush:

2 Likes

Hi hermen how ru u doing

1 Like

Hi Greg :wave: :wave:. I’m fine and you?

1 Like

Ok ,that’s good did I ask your carrier about the apn on your phone and what they should be u may have a carrier sim that may not be comparable with the phone