Help needed wincrisis

Hello,
I’m in trouble, I’ve flashed a wrong bios with winphlash16 my amilo pro v3505 is now frozen with a blank screen.
I’ve found the combination to enter the recovery bios mode (FN+ESC) I’ve created the wincrisis "usb floppy"
The system goes in recovery bios mode (if I press FN+ESC it reads the usb otherwise it doesn’t) but nothing happens after 30 mins… (The usb flashes for 2 seconds then nothing more)
Any suggestions? (The files in the usb are BIOS.WPH MINIDOS.SYS PLASH16 (GRABBED FROM THE BIOS INSTALLER GIVEN BY FUJITSU).
Thanks in advance.