Re: Hauppauge WinTV-HVR-4000 / Nova-HD-S2

[Kevin Wells <wells_kevin@yahoo.co.nz>]

Jonas Kvinge wrote:
> Whats the command to extract the firmware from the new driver release at
> http://www.wintvcd.co.uk/drivers/88x_2_123_27056_WHQL.zip
>
> The driver at http://www.wintvcd.co.uk/drivers/88x_2_122_26109_WHQL.zip
> is no longer available, so the link on
> http://linuxtv.org/wiki/index.php/Hauppauge_WinTV-HVR-4000 is broken.
>   
Hi Jonas,

I can't remember the exact command off the top of my head. But I can
tell you how to work it out.

The problem is how to determine the offset to use. Look at this hex dump
from the start of each firmware file:

    dvb-fe-cx24116-1.20.79.0.fw:
        00000000  02 11 f9 ec 33 50 03 12

    dvb-fe-cx24116-1.22.82.0.fw:
        00000000  02 11 fb ec 33 50 03 12

    dvb-fe-cx24116-1.23.86.1.fw:
        00000000  02 12 02 ec 33 50 03 12

Note the magic `33 50 03 12` bytes that appear at offset 4 in each
firmware file. You can use that to determine the offset of the firmware
in the `hcw88bda.sys` file (at least for the existing firmware files).

I used `hd hcw88bda.sys | more` and typed `/33 50 03 12` in `more` to
find the offset. Make sure to subtract 4 from the offset of the `33 50
03 12` bytes. Convert the offset from hex to decimal and use that as the
`skip` amount for the `dd` command.

Verify the extracted firmware using `md5sum`.

Perhaps when you get it to work you could update the wiki page you
mentioned.

Kevin