sorry, maybe the adaptor number is not 0 in your machine.
can you just try the command:
./atiflash -ai

on my end: the result is 
/home# ./atiflash -ai
Adapter  0    (BN=01, DN=00, PCIID=69011002, SSID=01341002)
Asic Family        :  Iceland        

if you can get the adapter number,
then try to save the atom bios by
./atiflash -s number file.name