How can I revert back to stock rom without its backup

[Neilesh c]

I tried rooting Galaxy J7 SM-700F, I think it wasn't rooted but I flashed a custom rom and now is there a way to go back to stick rom. I downloaded the stock rom from Google drive but wasn't able to paste it in the Sd card . Is there any other alternative other than rapid gator or sammobile? I don't want to spend 5 hours just downloading the stock rom. I tried flashing reserrectuion remix and it wasn't successful. Thankyou

 

[Golfdriver97]

Welcome to the forums. You can use the ROM you downloaded and use a PC program called Odin to go back to stock.