is it possible to change JQM's default icon? ( locally hosted files)

is it possible to change JQM's default icon? ( locally hosted files)

I locally hosted jQuery's CSS files. In the images folder, I changed the icons-18-white.png, and altered the default shape:






it works fine in Chrome environment when I refresh my browser. But when I build my application on devices ( iPhone or Android), it's still pick up the old default icon.

First, I thought it is cache issue, but I've tried to clean the project, but does't work.

any suggestions?