Hi, there are few guides in OpenWRT wiki which explain how to configure IP settings and download(using TFTP) an OpenWRT firmware file in bootloader(for example CFE) CLI. For example, I have following commands available in my CFE:
CFE> help Available commands: rndis Broadcom USB RNDIS utility. et Broadcom Ethernet utility. nvram NVRAM utility. reboot Reboot. printdefault Display the environment default variables embeded in the bootloader flash Update a flash memory device autoboot Automatic system bootstrap. batch Load a batch file into memory and execute it go Verify and boot OS image. boot Load an executable file into memory and execute it load Load an executable file into memory without executing it write Write a region of memory to a remote file via TFTP read Read a region of memory to a remote file via TFTP save Save a region of memory to a remote file via TFTP ping Ping a remote IP host. arp Display or modify the ARP Table ifconfig Configure the Ethernet interface unsetenv Delete an environment variable. printenv Display the environment variables setenv Set an environment variable. help Obtain help for CFE commands For more information about a command, enter 'help command-name' *** command status = 0 CFE> As far as I know, in order to access the bootloader CLI, a working bootloader and serial connection is required. This means that one can not repair bootloader itself over serial port. And in case the OpenWRT installation is broken and one can not even access the failsafe mode, then OpenWRT can be easily flashed by uploading the OpenWRT firmware from TFTP client in PC without initiating this on bootloader CLI. In which situation it's useful to be able to start the TFTP client on bootloader CLI? Are there situations where router bootloader will not start the TFTP server and one is not able to upload the firmware from TFTP client running in PC? Or are there some other clever maintenance tasks usually carried out from bootloader CLI? regards, Martin
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