[SOLVED] Lost link on odroid n2

somehow i lost the link connection. when i plug in the network cable, i usually have a LED which shows me (on the device), that it has a link established. but somehow not anymore on the odroid.
To make sure its not a fault in the cable i plugged it into my old htpc -> no problems.

anyone an idea what could have caused that? i am running the version from 27.6

edit: updated to latest nightly by copying the .tar to the sdcard (storage/.update), mounted on my linux box. seems to work again.