It's the correct dtb to use, but it's hard to comment on what's happening without seeing the output from the debug UART connector on the board; this shows the early (u-boot) boot process that we need to manipulate to boot Linux. Note that you can't just put the SD card in and boot, you need to invoke recovery boot so that u-boot searches for (and finds) bootscripts on the SD card. Also note that you must not rename the dtb file as with legacy kernel images: https://wiki.libreelec.tv/hardware/amlogic
same here, but i have some additional information.
i tried the dtb file from libreelec to boot emuelec - same issue.
i tried the dtb file from emuelec to boot libreelec - now i get am instant black screen.
emuelec is booting and working normal.
EmuELEC images are based on downstream Amlogic vendor kernels (CE not LE) which means device-tree files are not compatible with LE images using mainline kernels.
ah ok... so coreelec is the same i guess?
because coreelec is working also normal on this device.
I've never booted either of them (someone else's problem) so can't really comment 
