RB751U-2HnD don't respond after ROS upgrade

RouterOS Beginner Basics
1

I try upgrade RB751U-2HnD ROS from 5.8 to 5.11:

  1. unzip http://download2.mikrotik.com/all_packages-mipsbe-5.11.zip into FILES in Winbox
  2. Reboot
  3. Winbox does not see RB751U-2HnD over Ethernet
  4. RouterBOOT reset button (RES, front panel) don’t help.
2

Attempt Netinstall. Remember - don’t install ALL PACKAGES, only the ones you need. It could be possible that the device ran out of space during upgrade, and can’t boot now. http://wiki.mikrotik.com/wiki/Manual:Netinstall

3

Netinstall rules