Very interesting.
Now, I suspect that what is going on here is that LibreDrive is indeed enabled, but your drive cannot read UHD discs at the moment.
Download the latest version of SDFtool Flasher here, if you haven't already done so :
viewtopic.php?t=22896
Also download MartyMcNuts' All You Need Firmware Pack from that same thread.
Flash DE_LG_BU40N_1.03_MK.bin (the firmware Billycar11 recommends for Windows) from the "Slim External Drives" folder from Marty's Pack. Do so with a regular WRITE, no encryption, no bootloader, no RECOVER. Wait until SDFtool Flasher says "ready" again. Power off the drive (cut off all power to it, such as by unplugging it directly if it's inside an enclosure, otherwise just turn off your computer and unplug the computer's power source if necessary), wait 30 seconds, and power on the drive again. Check with MakeMKV that the flash was successful (read the Drive Information and LibreDrive Information sections again, it shouldn't say FR07 anymore).
Or, if you'd also like DVDFab/Linux compatibility, follow the above steps but with DE_LG_BU40N_1.00.bin instead (Marty's favorite firmware for this kind of drive I believe). Your current firmware is not encrypted, so you should be able to flash DE_LG_BU40N_1.00.bin directly without having to flash DE_LG_BU40N_1.03_MK.bin first, if that's what you want.
Should you be unsure as to which one to choose, DE_LG_BU40N_1.03_MK.bin might be a better firmware for reading some troublesome discs, but DE_LG_BU40N_1.00.bin can potentially allow you to bypass encryption for some (currently unsupported) UHD discs faster if you also have DVDFab and Xreveal (and KEYDB.cfg of course). If at some point you run into a newer and unsupported AACS version, hopefully using DE_LG_BU40N_1.00.bin alongside DVDFab and KEYDB.cfg will also allow you to bypass encryption for regular Blu-rays very quickly.
