i found this post forums.mydigitallife.net/threads/5864-Phoenix-bios-SLIC-mod-requests-(*.WPH-or-*.ROM-files)./page652?p=157814#post157814 which suggests a SLIC 2.1 BIOS has already been produced that would work on the dv2410us. however, the link is down. Can someone re-up it?
nevermind. I pulled my head out of my ass, read busyboy's description of the hack, found the tools and did it myself. great success.