hit CTRL+C in serial console connected to WRT serial console (don't forget the trailing colon, but don't press enter yet!): load -tftp -raw -addr=0xXXXXXXX -max=0x800000 : workstation: atftp --option "mode octet" --option "timeout 60" --verbose --trace -p -l openwrt-wrt610n_v1-squashfs.bin 192.168.1.1 serial console: (press enter now!) flash -ctheader -mem -size=0xYYYYYY 0xZZZZZZZ flash1.trx reboot 0xXXXXXXX: location of current firmware, get it from the bootloader's output 0xYYYYYY: size of new firmware, get it from the output of the load command 0xZZZZZZZ: location of new firmware, get it from the output of the load command