in archive you can find also CBDllConfig.elf, which I think I had to use to set the keys to be "pressed" to change EV by HDRshooter on C905.
I was still using this elf (HDRShooter) in 2016, but since I have iPhone 4S with camera+ app (which has many manual settings) , it is easier to use an iPhone. Maybe sometimes I will get newer iPhone which supports RAW imaging so I will not need to take multiple photos anymore. But they are still pretty expensive in my country and I don't think that I would need to buy new one anytime in my life (if I do not destroy the old one).