− | You can calculate the checksum of a firmware image file using '''md5sum'''. When you select a firmware image file for upload via the System -> Firmware page, the file gets uploaded into '''''/tmp/''''' directory with the name '''''firmware.img'''''. So the command to calculate the checksum should look like this: | + | You can calculate the checksum of a firmware image file using '''md5sum'''. This command should work on most Linux distros or you can upload the firmware into the router and calculate the checksum via a '''[[Command line interfaces|Command line interfaces]]'''. |