How to fix your seagate central, or add serial.
This was done on a 4tb seagate central, sorry for bad focus.

You dont really need serial interface but it is great for debugging. You can also mount the storage drive by logging in with shell/ssh as root user. I dont know how to make the hdd automount.


Ive lost the image my self but I think this is the image that I used:
https://drive.google.com/file/d/0B-PZ...
source of this image is this useful link: https://github.com/KL-Yang/seagate_ce...

Edit: this links might also help you, if the image above is not the correct one.
-http://seagatecentralenhancementclub....
-https://forum.doozan.com/read.php?2,2...
-https://forum.doozan.com/read.php?2,1...
-http://www.seagate.com/files/www-cont...


Serial config:
Baudr: 38400
8 Data bits
none parity
1 stop bits

For the usb-serial you need to install FTDI drivers.
BTW a arduino can also be usead as a serial interface.