My own FIR coefficients for 21061 won't work

Hi again.

There is "bandpass filter demo" in demonstration programs for 21061 
EZ-Kit Lite. It works something like that:


-- cut here --
.
.
.
#define NUM_TAPS 256

// uses fir.h file filled with 256 coefficients

float pm coeffs[NUM_TAPS] =
{
#include "fir.h"
};

float dm state[NUM_TAPS+1];
.
.
.
// and spooky fir() function, from filters.h:

tx_buf[1] = fir( rx_buf[1], &coeffs[0], &state[0], (int)NUM_TAPS );

.
.
.

-- cut here --

full listing of bp.c you can find here:
http://wisnia.server.pl/fir/bp.c
full listing of fir.h (for one filter) is here:
http://wisnia.server.pl/fir/fir.h
and its freqz() plot:
http://wisnia.server.pl/fir/fir.jpg

AND IT WORKS FINE !

Because I didn't found any serious manual for this example neither 
filter.h and fir() function, so I tried to generate my own coefficients 
file with Matlab using fir1():

-- cut here --

FSover2 = 8000;
Filters = [ 800 ];
TAPS = [ 256 ];
WIDTH = 200;
.
.
b = fir1(TAPS(j),[(Filters(i)/FSover2 - WIDTH/FSover2) 
(Filters(i)/FSover2 + WIDTH/FSover2)]);
.
.
.
fprintf(fid,' %6.10f,\n',b(k));
.
.
-- cut here --

...or remez():

-- cut here --

Fs=8000; fp=500; fz=800; TAPS = 256;
[n,fo,mo,w]=remezord( [fp fz], [1 0], [0.01 0.1], Fs );
b = remez(n,fo,mo,w);
.
.
-- cut here --

sample of one my coefficient files:
http://wisnia.server.pl/fir/myfir.h
and its freqz() plot:
http://wisnia.server.pl/fir/myfir.jpg

and nothing :( any of "my" coefficient files won't work ! If I'm using 
"my" file fir.h, bandpass program passes whole bandwith :(
I tried various frequencies, sample rates, filter orders...
Why the heck is going on ? What's the difference between original and my 
coefficients ?

I really have no idea what to do.

Greetings,
Bergen