RB2011UiAS-RM loading kernel from nand

Device crashed one day and we attempted to reboot it, but it would not pass “loading kernel from nand”

I’ve tried to use the netinstall tool, but it fails to install. I configured the software and after selecting the files click install. The device changes from “Ready” and goes blank. The about 10 seconds later shows “Ready” again. I never see installing

Rebooting device still shows “loading kernel from nand”

Connect the router to pc via a switch and try netinstall procedure again…