New sources code and images aren't shown on device after new compilation

I've created a project with some uis and so on...i've tested it on my n8 and all work fine
i've added new image in .qrc and new uis and code in exsisting files...when i test it on my device it shows me always the old version!
I've clean all project and recompile; i've change clean step with "make distclean"; i've removed app on device; i've create the sis with "Build all" and after i've installed it manually;
I've run "rcc filename.qrc -o qrc_xxx.cpp"...the images don't changed and new code doesn't show me as well!