Hello guys,
I am trying to boot on my X5000/40 MorphOS using a USB, but it stacks after bootmorphos and doesn't load at all.

The last printed messages are:
Trying to load "bootcyrusplus.img" from "SDH0:"...
Loaded "bootcyrusplus.img" from "SDH0:", booting...

After that stays on uboot grey screen without proceeding.

Tested 4 different sticks but no luck with any of them. I also tried with no hard disk plugged in.

In case the Gfx cards I tried on my machine are not supported, would I see something after that step, for example black screen or grumbled graphics? I tested an HD770, R9 280X and a Gigabyte GV-R725XOC-2GI.

Any recommendation?