I have a HL-DT-ST BH16NS55 and installed the firmware from the firmware pack with the SDFtool Flasher.
I also made a backup or at least i thought i would be with the Recover Drive function. But that seem to be a wrong guess.
Now I have the 1.05 firmware (with libredrive) but now i loose the connection to the drive after one or two runs with makemkv. I have to restart the whole PC to get it back to work.
Is there a way to undo the firmware update? If I try the official exe, I get a message, that i already have the latest firmware.
Some advice would be great.

Best regards