hmm so this could be my bad. I just realized there are two separate applications one called "Advanced Power" and once called "Advanced Power Monitor" I'm not sure what the difference is between the two but I have Advanced Power installed and it has an option for changing USB mode and is accessed on the status bar. maybe the other one does something else, I dunno but its possible that this is the problem. both applications are found here: https://garage.maemo.org/projects/advanced-power/