Arcadyan bouygueltv HMB4213H Rom? help

[jeltop]

Hi

I have a box bouygueltv french box name arcadyan and i want to change the firmeware rom for a new
i search on web , i can reset it why button reset but when i do it , it say reset or start again...
i test with a card with a rom , but the soft don't take it , always the same picture

sorry my english is no good

do you can help me please
if i can connect to with putty or another program to change firmware?
i can ping it when i connect to ethernet but when i test with putty it say connection refused when i test port 22

thanks you

[jeltop]

another picture of my box