ShellAck

The same TFTP procedure used for the WHR-G125 also works for the ethernet connector. You just have to replace the default IP 192.168.11.1 of WHR-G125 with 1.1.1.1.

Another Buffalo router is running DD-WRT.

Initial flashing was not as simple on the WHR-G125 as it was on my Linksys router, so I collect some things worth remembering (your mileage may vary, if not using Linux).

Rollback to Buffalo's original firmware is difficult, because you need an unencrypted version, which is not officially available. So, please be extra careful. I will not give any warranties, that this will always work, but at least it worked for me.