Comment 11 for bug 987531

OK, after quite some time trying to upgrade the BIOS I finally succeed. For other people that might find this information useful, this is how I finally did it, using FreeDOS and an usb drive.

1. Install unetbootin: apt-get install unetbootin
2. connect the USB drive
3. umount it if it was automatically mounted, make a linux16 partition on it (I've used fdisk), mark the partition as booteable
4. open unetbootin and select FreeDOS as the distribution, select the USB drive partition you just formatted (it has to be mounted) and write it
5. Instead of downloading the BIOS update from the Toshiba Europe website that only offers a Windows executblae, go to the US website and download the update from any Portage Z830 (I've used the one for the BT8300 model), which is zip file disguised as a Windows executable. I downloaded this file precisely: http://cdgenp01.csd.toshiba.com/content/support/downloads/t224v180.exe
6. Unzip the file contents in the USB drive with FreeDOS
7. Reboot from your USB drive
8. Select safe mode from the boot menu
9. go to the C: drive: C:
10. run: CHGBIOSF C:\BIO0081T.COM

Now I need to play with different kernel booting option to see if I can get the CPU frequency properly working without breaking other stuff. I just realized I never commented here how I partially fixed this problem. Here it is:
http://www.llucax.com.ar/blog/blog/post/-31ba9e5e

The issue I have now is the brightness control gets broken after the first suspend-resume.