ive got it sorted now, using the roland floppy imager.
Ok heres the file, unzip it to your c: drive, get a blank floppy and run the program.
press d, for the filename put sdisk.out and for the drive select a: place your floppy in and press w to write the image.
now ive done my upmost to make sure the disk is correct, but if it fails for any reason i can't be resposible, its your risk if you use it
i can't remember since its been a while since i flashed the rom but it migth be possible that you get an option to backup the previous rom before flashing, i would highly recommend you do this so you can roll back if there are any problems
hope it helps and if it works please let us know
http://storm.8088.org/emusonacid/EOSv3b.zip