Ok try this , download once more the firmware from frija , remember the location, find it and right click with the mouse the zip file and choose extract then open itI simply put my phone model SM-N920C in mobile model box, my country code in CSC box and ticked the auto box and clicked download. The firmw was downloaded and automatically decrypted. I extracted the file and it had only one file ending with ".._HOME.tar.md5" I added ".zip" to the end of the file and the pic above was what I got inside :\