I tried to flash the D-Link firmware on the Comtrend CT5367. It did not work. After a lot of flashing of wrong firmwares, I lost the bootloader as well. I'ts a 4port switch now (bricked)
The board-id is
96338A-122 (Bulgarian Vivacom)
and in other parts of the world also exist
96338A-222, I don't know what the difference is.
I used the tftp flash command from the telnet command prompt of the Modem:
>tftp -g [ip of tftp server] -t i -f [wrong firmware binary lol]
It seems the software that was running on this small machine checked only if the firmware binary passes some broadcom identification (as seen from messages on the screen).
I think I lost the bootloader after I fed it an OpenWRT binary from the download site I bet it was a totally wrong one for this board
Here is a picture of the board
If anyone has any ideas what to try or what I should have done, please post Thank you. (like how to connect with RS-232, how to re-program bootloader and so on, you could also post links to how-tos)