WHR-301N(実際はNTT W200)の書き換えに失敗。
ARPテーブルを静的指定し、TFTPリカバリを試みるも読み込まず。
やっぱり、OEM向けは仕様が違うんですかね？
以下、シリアルコンソール出力です。

eth1 link down

tftp server(receive) go, waiting:4[sec]
eth1 link down
Load address: 0x80f00000

TftpServer Timeout;
no file was loaded.
## Booting image at bf040000 ...
Bad Magic Number
# LED(0x2) Blink[2] (Please press 'Ctrl+c' to stop)
^C
Bad Header Checksum
# LED(0x2) Blink[2] (Please press 'Ctrl+c' to stop)
^C
Image Name: WHR-G300N
Created: 2011-06-21 2:20:48 UTC
Image Type: Invalid CPU Invalid OS Invalid Image (uncompressed)
Data Size: 0 Bytes = 0 kB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Unsupported Architecture 0x0
# LED(0x2) Blink[2] (Please press 'Ctrl+c' to stop)