Oh thank you very much. But I had activated the cd mode and the letter.
I tested on E and B, because I was not sure of the message…Without success.
I added my mgc on https://www117.zippyshare.com/v/F8NIHjjO/file.html
I found the rom on wowroms (not sure it’s allowed to give the link directly.)
I add the message : https://zupimages.net/up/23/03/7gga.jpg