[OpenWrt Wiki] Upgrading OpenWrt firmware using CLI
openwrt.org › docs › guide-userDec 11, 2021 · OpenWrt provides sysupgradeutility for firmware upgrade procedure. Verifyfirmware image checksum. Verify the router has enough free RAM. Upload the firmware from local PC. Flash the firmware. # Check the free RAM free # Upload firmwarescpfirmware_image.bin root@openwrt.lan:/tmp # Flash firmwaresysupgrade -v/tmp/firmware_image.bin