How to import a custom screen on 1.3034?

[Dome]

If you load a 1.3034 iso, this is the first screen you get

Can someone explain me how to edit it?
Thanks a lot

[philsov]

http://fftdev.istaken.org/sceapdat.php

either rip it from the iso via CD mage and convert it, or take a screenshot and directly modify it as a png.

It must be 320x32 pixels.  

Once changed, convert it back and insert with fftpatcher or cd mage.

[Dome]

Thanks Phil, you are awesome!

[Cheetah]

Isn't this image editable in newer versions of ShiShi as well?