RouterBOARD 450/G Series User's Manual
the loader image as a boot image and choose the bios upgrade over ethernet option in the boot loader
configuration menu. The loader will get the image from the TFTP server and upgrade itself. The most current
loader image is available for download on www.routerboard.com.
The boot loader upgrading is supported also from MikroTik RouterOS. The procedure is described in the
MikroTik RouterOS manual.
Backup Bootloader
There are two boot loaders present on the NOR flash memory chip. The main one, that is executed by
default, and the Backup, which is built-in failsafe. In case something goes wrong in the upgrade process, or
you have set some incorrect settings that render it unusable, you can load the Backup boot loader by
holding the Software Reset 1 button (S301) connecting the power, and then releasing the button/jumper.
The Backup boot loader uses Default settings, which can not be changed. It is also not possible to upgrade
it. In case the Main Bootloader is damaged, RouterOS v3.23 supports Permanently setting the Backup Boot
Loader as Main (thus avoiding the need to hold the button).
RouterOS on RouterBOARD 450
Health monitor
This menu shows the current input voltage and fan status.
[admin@MikroTik] > system health print
fan-mode: manual
use-fan: main
active-fan: main
voltage: 18.8
[admin@MikroTik] >
fan-mode – whether to use automatic fan failover (auto | manual; manual by default).
use-fan – which fan to use in manual mode (main | auxiliary; main by default).
Firware information
This menu displays RouterBOARD model number, serial number, the current boot loader version and the
version available in the current software packages installed.
[admin@MikroTik] > system routerboard print
routerboard: yes
model: "450"
serial-number: "154201C1DD3C"
current-firmware: "2.16"
upgrade-firmware: "2.16"
[admin@MikroTik] >
The firmware version can be upgraded using “/system routerboard upgrade” command, if a new
firmware file has been uploaded to the RouterOS “Files” menu. Also new firmware is present in the
routerboard.npk package, which is usually installed by default. In this case new firmware becomes available
after a software upgrade. Availability of new BootLoader versions is displayed in “upgrade-firmware”
Firmware Settings
Boot loader settings are also accessible through this menu.
[admin@MikroTik] > system routerboard settings print
baud-rate: 115200
boot-delay: 2s
boot-device: nand-if-fail-then-ethernet
enter-setup-on: any-key
cpu-frequency: 680MHz
boot-protocol: bootp
enable-jumper-reset: yes
[admin@MikroTik] >
The Software Reset jumper (RESET) button, which resets both boot loader settings and RouterOS setting by
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