Hello,
thanks to Kajoe for great instructions - good work!
I use NextGen_NNG_9.18.27.687519. My loading image is controlled by the UX utility called gpsandmore_generic.zip
Picture Nr.1 – load screen with applied gpsandmore_generic.zip
Picture Nr.2 – load screen - deleted utility gpsandmore_generic.zip
Spoiler: screenshots
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