The ver.req file is used to retrieve firmware information from the camera. Ver.reg First Page Data From playback mode, after holding the button FUNCSET then press DOWN (the button with the trash can / timer symbol on it): Canon PowerShot A480 P-ID:31BF PAL D Firmwave Ver GM1.00B NoError Dec 5 2008 17:19:05 Ver.reg Second Page Data: Subsequent press of DOWN (while still holding FUNCSET) reveals: Adj Ver. 005.007 Ver.reg Third Page Data: and another press of DOWN (while still holding FUNCSET) brings up this: vers.req Third Page Data: After holding down FUNCSET then pressing DOWN three times: