Thank you for helping.
I did format and reinstall the bios and eeloader. Now the cartridge works ( I don't know why it does this time after several attempts doing the exact same thing ) but anyways..... it works now.
My only concer now is that it is very hard to read the rom lines.
I can't read the name of the games, I have to guess or look at the TV from far away
Every name is split in horizontal lines instead of being a single line.
My TV is NTSC , the bios I uploaded is the . ntsc.
The games look fine, but the menu is almost unreadable.