I recently aquired an amazon firestick 4k which i cannot register or update after i factory reset it. I got in touch with amazon and told them my problem. They asked for the serial number on the box as the stick was probably deregistered. I could not give them the serial number as i only have the firestick.They said there is nothing they could do without it. I was wondering if you knowledgeable people could help me or do i bin it?