Firstly, big thanks to Tino (2wires) for helping me sort out my navboot file.

I have uploaded my modified V27 software with an Alpina logo (care of Appy) and it all works as it should except that the splash screen no longer comes on when I open the driver's door.

Is it likely that this is because the custom splash screen is about 90kB whereas the original BMW is about 11kB?