-The device did not respond to `nmrpflash`'s TFTP upload request. This could indicate a bug
-in the TFTP code; try using an external tftp client (busybox in this example), by specifying
-the `-c` flag instead of the `-f` flag:
+The device did not respond to `nmrpflash`'s TFTP upload request. By default,
+`nmrpflash` will assign `10.164.183.252` to the target device, while adding `10.164.183.253`
+to the network interface specified by the `-i` flag. You can use `-a` to change the IP
+address assigned to the target (e.g. if your network is `192.168.1.0/24`, specify a *free*
+IP address, such as `-a 192.168.1.252`), and `-A` to change the IP address used for the
+network interface.