Sce sys

Before installation of a application, this folder will hold the files icon0.png and param.sfo. During the installation, the OS will create a folder called package and additional informations about the application will be stored within.

Structure

[Before Installation]
/sce_sys/
    icon0.png
    param.sfo

[After Installation]
/sce_sys/
    /package/
        file
        file
        ...
    icon0.png
    param.sfo

icon0.png

Is the bubble image that will be shown within the LiveArea and hase a size of 128x128 pixel. The bit depth need to be 8 bit and you should use indexed color instead of RGB.
If you need help converting any image to a icon0.png, here is a video showing how to do that, using PhotoShop. Convert icon0.png