vista 5536 and 5552 problem

[mohammad awad]

I have a TOSHIBA PORTEGE M200 TABLET PC , with a Intel Pentium M processer 2.0 GHz with 1024 (RAM) with vista 5472 beta 2 and i tried to install the vista 5552 and 5536 both have the same problem with BIOS and i have the latest BIOS, i have v1.8 and tried all the others v1.7 and v1.6 and i keeps on giving me this.

You must make the following changes before installing Windows

Windows cannot be installed on this computer with the current system BIOS version. Contact your computer manufacturer for a BIOS update, install the update, and then start Windows installation again. OEM Name: TOSHIBA; OEM Model: PORTEGE M200; BIOS Version: v1.80 ; BIOS Date: 20051024000000.000000+000

plz help if you know any thing or download that could help or a sollution thank.