Need help to do hardreset of OpenWRT flashed Microtik RB951G-2HnD

Installing and Using OpenWrt
1

Advise me please what I'm doing or understanding wrong in how to perform a hard reset of OpenWRT flashed router with hardware reset button.

I have Microtik RB951G-2HnD with OpenWRT flashed from the following files few years ago:

openwrt-19.07.7-ar71xx-mikrotik-nand-large-squashfs-sysupgrade.bin (SHA256 f10638e70fc893bd20fed83fa20a921d6389a91e7b44535ec8ccf7b1c88e1a23)
openwrt-19.07.7-ar71xx-mikrotik-vmlinux-initramfs.elf (SHA256 311dd5284f400e6e96de79d54676e346b5471ba48c6f16155c4f2f47bc8c5224)

I want to do hard reset and following this instruction: https://openwrt.org/docs/guide-user/troubleshooting/failsafe_and_factory_reset#factory_reset

The manual states:

  • Power on the device and wait for the status led to stop flashing.
  • Press and hold the reset button for 10 seconds.
  • Release the reset button.
  • The device will do a hard factory reset and then reboot.

As I understood I may press and hold the reset button relatively at any moment, if the moment is late enough. Am I right?

But, after all, the router is still providing an IP address over DHCP from a subnet configured in past, responding to pings at the old custom address, responding to SSH client at old custom port.

Also I do not see any traffic with tcpdump -Ani enx0 port 4919 and udp during my another attempts to do soft reset.

I guess it means: the router is not reacting on my activity and works as it was set up in a past.

There is 74Mb video with power-off and power-on (from 6-th second) of the router, in order to show what a router's lights I see - https://limewire.com/d/qyfQm#JGL2952xRS (will expire in one week, I'll renew the link).

At what a moment should I press hardware reset button for 10 seconds?
Is there any specific I'm missing?

Thank you!

P.S. The device page is here - https://openwrt.org/toh/mikrotik/rb951g_2hnd

2

The key for the answer was on the video. From infrastructure point of view, an enterprise network is more (should be) trusted and more suitable for net-boot server placement, than smth. from an end user's space, hidden behind the firewall (the subject hardware is targeted by manufacturer not only for a home use). When from an end user perspective it is the opposite. The latter was the error.

The hardware port, where the hardware will try net-boot, is wide area network (WAN) port numbered 1 - the external side relatively to a future LAN to be provided by the router. It does not boot from inner ports from 2 to 5.