You can change the

In the \windows directory there is a file called welcomehead.96.png that is a 400x400 png file.

Create your favorite .png and name it something like welcomehead.96.txt, then copy to the \windows directory and rename the file to welcomehead.96.png using a file explorer like Total Commander (you can Google to find it).

Sub-tip: The display on the Omnia is only 240x400, even though the welcomehead is 400x400, so only the first 240 pixels will show, so center your image in the first 240 for the correct look.

Then, every time you soft-reset, that image will display.

pw-man