Tony,
I have a generic "Chinese" 4.3" GPS (Spare) & have just test installed SkyDemon Inflight as a stand alone program on a freshly formatted 1GB SD card.
My opening splash screen on the GPS, is a "Red car by a windmill" - any similarity?
If so, it will run SKD. I formatted a spare 1GBG card (FAT) put it in a card reader & installed SkyDemon Inflight from the PC start menu. Used the Install by Secure Digital Card option - only chose Terrain, UK & Ireland.
Put card in GPS, turned on & click the right arrow until Settings is visible. Click Settings - Click Right Arrow - Click Nav Path.
Tap Arrow - Double Tap "SkyDemon" - Double Tap "SkyDemon.exe"
Tick the Auto Run Navigation box - Tap the disc icon at the top (saves the choice) - Tap the "Ring" icon at the top
Now return to the Navigation (Car) icon at the bottom of the screen. Tapping it should start Skydemon.
If I'm stating "The bl**ding obvious", apologies,
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but it might help someone else.
I suspect you've done all of this, but the most important thing is to click the disc icon before leaving "Settings" so that the settings are held in memory.
(I'll road test this install tomorrow, but I'm finding 1.1 crashes with an error after 5 minutes on my regular Navigo V2 )
Best of luck,
Max.