I'm still questioning myself on the reason why the CPU pinout on their board is different .

I've checked that readfile routine, but, to me, it is used to read the file from the PC.

They should try to use that 5517FTACI.
The stburner_bak directory can be compiled with no error.
The other directory (stburner) generates some errors, but I've not taken the time to check why.
In the stburner directory, there are additional routines in the main.c : flash WPen, device ID check etc ..