You need the Intel Integrator Toolkit. However, I do not know if it is still available. One of the Intel Support Staff can confirm that.
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I understand you want to customize the splash screen on your Intel® Desktop Board.
As Al Hil mentioned, this can be done with the Intel® Integrator Toolkit; however, I am not sure if it will work with an older board.
You can see the readme at Intel® Integrator Toolkit - Version 6.1.6 Readme
I hope this helps.