Firmware philips jackrabbit JR4DVDRWK/00?

i’m looking for firmware of this Portable DVD+RW drive

thank you

If there are any, then here:

http://www.p4c.philips.com/cgi-bin/dcbint/cpproduct_selector.pl?scy=&slg=ENG&SearchTxt=JR4DVDRWK%2F00+&grp=&cat=&sct=&tmplt=

And you may try to search the net for firmware, but I would suggest applying only the official release.