The extra bios setup options is there but I fail to activate (previously activated before flash). Loxxx version activates (there was a pop up at start up asking to reactivate) and it was good but for yours it's asking to enter a new serial. Thanks to both of you.
Thank you very much Serg008, my first biosmod installation, and now i have my dv3510nr working with SLIC 2.1
i have to justify my answer, ok, the bios file is compress or encode by HP and no known tool can open/decompose the binary, it's a known problem for some models, and lot of tests had been done with dumped bios with no success, i've spend a lot of time on this, and i stopped my investigations.