Thanks for your responses..
I'm happy to follow instructions !! but need some hand holding I'm afraid.
I'm struggling to understand the relationship between the dump of my firmware and the "port" - presumably this is because the CHDK software for this camera is in Beta ?
I have no idea how to do a dump of the firmware...
I also confused about the relationship of the ""step one" of viewing the firmware version on the camera which implies that the "vers file" is written to during this step... which I assume is a pre-requisite for the bin bootfile file to work ....as it reads the ver file??
In which case.. wouldn't this need to be created in a different way because the type of camera (with its touch screen and all) that doesn't seem to accept the key press roll the finger thing as suggested in earlier posts.
Like I said - happy to follow instructions - and appreciate the expertise on the forum - fingers crossed I'll get this working
Greg