Samsung Note SM-N9208 Duos 64GB

I have purchased Samsung Note SM-N9208 Duos 64GB from eBay ( Taiwan Region and i am living in Bahrain) few week ago. i have work for few hours and then stack, later i use turn the device to back to factory setup but when i switch on it will restart in few seconds. I try to upgrade firmware but it fail and not accepted. how can i over come this problem or force the device to to accept Samsung firmware.
Please assist me since it is not easy for me to return it back to Taiwan.
Regards