I think we had better start again.
Normally, you can use CHDK or SDM, whichever you prefer.
However, your script can only run with SDM so we will use that.
I hope you you will be able to help me far more with how to fly an electric helicopter when we have finished all this 😀
Download this
http://stereo.jpn.org/eng/sdm/file/1.85-148-s95-100h-57.zip and unpack it.
Using sdminst.exe format your card FAT16, everything will be erased.
Make the card bootable.
Copy DISKBOOT.BIN to the card, lock it and power-up the camera.
In ALT mode, press Menu.
You should see a number of items including Advanced and Stereo.