Debian and HP BL460G6

 These commands assume that you have already downloaded the firmware.tar.gz file from the URL listed above into the current directory.
dd if=/dev/zero of=firmware.img bs=1MB count=8
 /sbin/mkdosfs firmware.img
 mkdir mnt
 mount firmware.img mnt -o loop
 cd mnt
 tar xfz ../firmware.tar.gz
 cd ..
 umount mnt
 rmdir mnt
This will produce a firmware.img file that can be used as a “Local image file” for the “Virtual Floppy/USBKey

ftp://ftp.hp.com/pub/softlib2/software1/pubsw-linux/p1976866454/v67901/Debian-ProLiant-Support-Notes-20110527.pdf

http://cdimage.debian.org/cdimage/unofficial/non-free/firmware/squeeze/current/