As in other Canon PS case, the ver.req file works as well in this model. vers.req does the same job plus it reports the number of shots. Press FUNCSET and DISP simultaneously: It shows the following: Canon Powershot G10 P-ID:318-F PAL D Firmware Ver GM1.00F NoError Aug 22 2008 10:55:13 subsequent press of DISP (while still holding FUNCSET) reveals: Adj. Ver.009.006 NoError Aug 22 2008 10:55:13 and another press of DISP (while still holding FUNCSET) brings up this: Adj. Ver.009.006 IS Firm Ver. 2.08 IS Param Ver. 2.02