If you downloaded the flasher + firmware pack zip file from the first post, the firmware/s you are looking for are located in the zip file at:
BP60NB10 1.02-MK:
mk-firmware-pack-20200720\MK\HL-DT-ST\BP60NB10\HL-DT-ST-BD-RE_BP60NB10-1.02-NM00800-212005070935.bin
BP60NB10 1.00-MK:
mk-firmware-pack-20200720\MK\old\HL-DT-ST-BD-RE_BP60NB10-1.00-NM00200-211711211720.bin
So, as your drive came with 1.02, you must flash 1.02 MK first. Since it is the same firmware (just the MK version), you will not see any drive firmware number change.
Now you can flash 1.00-MK.
Once this has been done, open MakeMKV and you should see on the right hand side, firmware is version 1.00 and that libredrive has been enabled.