RT-AC68U no lan or wan connection, will not boot pass CFE

so i brought a second hand RT-AC68 router that was stated to have problems with the lan ports.
After getting the router, i reset to defaults the router on the DD-wrt page. After which it stopped booting correctly.
so i writed up the router to Serial and was able to see that is
"Null Rescue Flag.
boot the image...
Invalid boot block on disk"

show devices gives me this.
Device Name Description
------------------- ---------------------------------------------------------
uart0...

RT-AC68U no lan or wan connection, will not boot pass CFE