I'm still not having much luck flashing an empty (signed) VBMETA file to my BDF M107 tablet.
I followed this post and was able to flash my empty VBMETA file, but the tablet got stuck at the logo screen upon reboot. I ended up re-flashing the FDL/FDL2/VBMETA images with BeTools to get the table back up and running.
Anytime I use the "--disable-verity" command along with fastboot flash, I get stuck at the "writing" message. Leaving that part out, I can flash either file... just if I use my version, I get stuck on the boot logo afterwards.
I've attached both the original file and my version in hopes that you can give me some pointers. I've also attached the info_image output for the files.