I have the same dell inspiron N5010 with same bios revision.But the bios is AMI not insyde.It has hidden slic and you have to use the dell bios reset tool.I was able to make the slic 2.1 appear and able to auto activate using original dell win 7 home premium dvd from my old dell inspiron 1545.
This time it´s possible to boot to windows after flash but slic tool 3.2 writes "SLIC table wasn´t found (dump error)"