Try from an USB boot Key, it seems that your floppy can be broken, did you try it under windows ? and right formated ??
The floppy driver is ok under Windows in other PC. And format in FAT and FAT32 but nothing. This night I probe the 3.51 version and tell you my result. WHAT DISASTER. More that 10 motherboard flashed OK and brick the notebook more expensive. BAD LUCK. THANK FRIENDS.