How to configure VFD

[TheCoolest]

Yes, all I need is the DTB from it. I think on your device it should be doable from CE (after you install the A3 ROM)

Extracting .dtb file from a running Android OS

If you still have Android installed, you can boot CE from USB/SD and type dd if=/dev/dtb | gzip > /storage/downloads/dtb.img.gz on SSH, you can then download it from the Downloads folder.