Update the router firmware using command line interface

Installing and Using OpenWrt
1

His there away to update the routers firmware using the command line interface?

2

"sysupgrade" is the command.
You need to first download the firmware file to the router's disk, e.g. to /tmp ramdisk.

 OpenWrt SNAPSHOT, r5740-012d20eebe
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root@LEDE:~# sysupgrade
Usage: /sbin/sysupgrade [<upgrade-option>...] <image file or URL>
       /sbin/sysupgrade [-q] [-i] <backup-command> <file>
3

Thanks. The command sysupgrade backup -b doesn't work.

I get this error Image metadata not found
Use sysupgrade -F to override this check when downgrading or flashing to vendor firmware
Image check 'fwtool_check_image' failed.

4

Most manufacturer firmware files need to be modified to make them suitable for flashing with sysupgrade. If you are flashing an OpenWrt sysupgrade file, use either no options, or -n to not save configuration.