Hi,
mf16858 is correct. And I just use mm6108.bin in v2.8.2 repo.
For BCF, Go to GitHub - MorseMicro/morse-firmware · GitHub and branch 1.15 and you could find quetel’s. I think I have used it. And convert it following Seeed Studio FGH100M-H BCF and FW binary files for IoT SDK ESP32 v2.9.7 - #2 by xflash .
Good luck..