I'm sad to say none of the provided TWRP firmwares supplied here worked for me on my BoYue LemonRead S62A. It's an unusual failure too: The flashing succeeds but when the device reboots, it lands in the default recovery as if nothing was written. My best guess is that BoYue modified the bootloader to overwrite the recovery with a copy if it's been modified. The reason I believe this to be the case is that I still managed to root using the same tools by modifying the system image itself following the procedure here:
https://www.mobileread.com/forums/sh...d.php?t=326914
Anyhow, thanks for providing the tools and instruction on how to use the dumper.