Thanks, but perhaps I should have been more detailed, I did download, extract and place a copy of PS.FI2, vers.req and DISKBOOT.BIN that I extracted from ixus220_elph300_101e.7z in the root of the SD card, but pressing"Set+DISP" only brings up the time screen.
I also downloaded ACID and SDinst (MAC Versions) but not sure how to use it to read the meta data from a jpeg, as the BIN files from ACID and CHDK are grayed-out.
Do I have to have the proper vers.req or PS.FI2 installed in order to read and update the Firmware version, or am I missing something else?
Thanks Again