Ensuring changes are made to firmware ARdrone 2.0

Hi,

I've been attempting to change the firmware on AR Drone 2.0  using the path
"paparazzi / sw / rotorcraft / guidance / guidane_h.h"  and would like to see if the changes are made when uploaded to the drone using telnet.  

Can someone please advise me of the correct telnet command to view the changes or a more appropriate set of files to view changes carried out.

thanks