I have a Vorke Z6 with a S912 and 3G ram. Ive tried both of the gxm device trees but cant get it to boot.
Both? .. there are at least 8x device-trees for GXM boxes and they are all mostly identical. If none of those work .. unless you attach a UART cable and share the u-boot serial console output so we can see where it gets stuck. Note the device-tree process is different in mainline images: You need to use the "box" image and edit the dtb name in uEnv.ini. if you start renamng files like legacy images do that's one reason none will boot.