[CA] a Series Splash Screen

I followed the instructions to load a 'splash screen' on to my 2 a Series units (a127 and a128) and didn't have any luck.

I resized the picture and downloaded the 2 files on a 16gb card. After attempting to load the new splash screen, it didn't work. And when I looked at the files on the card again, the 3 original files were on it in, but also looks like 3 more were put on by the machine. What am I doing wrong?

Any help is appreciated.