Metal upgrade to ROS 5.20

Have a problem.
After upgrade from 5.16 to 5.20 I lost connectivity to board.
Board every 10 seconds rebooted and i have up\down ethernet interface.
How to fix it? Whats the problem?

Someone said about , need upgrade firmware first, then ROS?

Check if your power supply is good enough. Try 24V 2A PSU. If PSU is not the problem, attempt to do Netinstall

PSU is good, we have is too much PSUs for test.
Netinstall not see device. What need to do exact for Netinstall?

To launch Netinstall mode in any RouterBOARD device, follow this procedure:

  • turn off the device (unplug PoE)
  • push and hold the button inside Groove/Metal case (next to Ethernet plug)
  • keep holding the button, and apply power
  • wait until the device boots, and then some additional 25 seconds, then
    release
    button

Netinstall mode has been launched, and Netinatall will detect the device.

No Result, board flashing and rebooted every 20-25 seconds and i’m no see device in Netinstall.
Maybe need push and hold button inside metal chassis? i mean circle on board(if exist), not reset button near ethernet port.

No, metal circle only resets, it has no other function.

Netinstall must be called by the button.