HELP! Odin not working

[Android Central Question]

Hello, I have a Samsung SM-A310F which I have bought in the UK on O2. It had nougat installed, but I wanted to downgrade to marshmallow using Odin.

I downloaded the corresponding firmware from sammobile and followed the standard procedure, but it fails every time. Now I don't have an OS and Kies and Smart Switch say that my device does not dupport initialization.

Also, the phone was SIM unlocked if that is important.

Please help!

Also this is my first time posting, so I'm sorry for any posting mistakes.

 

[Spawnlives]

Hello, I have a Samsung SM-A310F which I have bought in the UK on O2. It had nougat installed, but I wanted to downgrade to marshmallow using Odin.

I downloaded the corresponding firmware from sammobile and followed the standard procedure, but it fails every time. Now I don't have an OS and Kies and Smart Switch say that my device does not dupport initialization.

Also, the phone was SIM unlocked if that is important.

Please help!

Also this is my first time posting, so I'm sorry for any posting mistakes.

What erros are you getting with Odin
Are you using latest Odin version 3.13.1
Generally due to bootloader version you can not
downgrade firmware eg: nougat to marshmallow, Oreo to nougat etc so you will have to flash the
same or higher version firmware than is what is on your phone.