[linux-dvb] Where does the firmware come from

Mark Howells Mark.Howells at softoption.com
Thu Sep 14 13:12:19 CEST 2006

> -----Original Message-----
> From: linux-dvb-bounces at linuxtv.org 
> [mailto:linux-dvb-bounces at linuxtv.org] On Behalf Of Alan Chandler
> Sent: 14 September 2006 00:46
> To: linux-dvb at linuxtv.org
> Subject: Re: [linux-dvb] Where does the firmware come from
> On Tuesday 05 September 2006 10:50, Alan Chandler wrote:
> > I am new at this, so forgive the naive question, but where does the 
> > firmware come from.
> >
> > I downloaded the firmware for my freecom usb dvb-t tuner from a web 
> > site (not linuxtv.org) as a binary file which I found in a post I 
> > picked up from the mail archives (because the id of the unit is 
> > 14aa:0225 rather than the more standard ids), and since 
> then someone 
> > has said there is a bug in it, which means we have to tune 
> to integral no of MHz.
> >
> > I have tried installing the tuner under windows - but it is 
> not at all 
> > obvious to me which file under windows is the firmware either.
> I asked this question over a week ago.  Is there no one out 
> there who can give me the answer as to where this firmware 
> originated from, and is it ONLY available in binary form.


I did reply to your last email - both directly to you and to the list on Tuesday 5th Sept. Basically the firware is a compiled programme, created by the hardware vendor, that allows the (general purpose) chipset to be dedicated to a particular use. It's normally only available in binary form and mods are not easily made. Even if you had the sources you'd need appropriate compilation tools and very detailed documentation for the stick. 

In summary, there's nothing you can do, except (I suppose) lobby the manufacturer to make changes for you.

BTW, I am still no further with my Freecom stick which exhibits the same issues as yours (recv_bulk failures and odd tuning requirements). I suspect that the recv_bulk errors are due to a poor USB implememntation on the stick - it does draw a lot of power. I'm going to try running mine against an independantly powered hub for comparison.



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