You gotta terminal indeed. The process should be relatively painless if everything's in place. Instructions should also work on Linux.
Find the right firmware bin file for your drive from either
mike's firmware pack or
marty's all-you-need pack ... and for convenience's sake, copy the bin file to your home folder. In my example, I'm going to flash BU40N 1.04 on my drive.
I will also assume MakeMKV is installed to
/Applications on the Mac. If it's somewhere else, change that accordingly in step 1 for your system.
Open a Terminal on your mac and run these commands. There's a screenshot below if you need a visual aid.
STEP 1
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alias sdftool=/Applications/MakeMKV.app/Contents/MacOS/sdftool
This will make it easier to simply run
sdftool by name instead of typing in the full path every time.
STEP 2
This shows a list of the drives that were detected along with their device IDs. The device ID on Mac is random, so don't just copy-paste the one I'm showing. In my example, my device ID shows up as /IOBDServices/27FE1BA4 which will be used in the next step.
STEP 3
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sdftool -d [your device ID] rawflash main,enc -i [name of firmware bin file]
This command will start the reflash process. Fill in the correct device ID (from step 2) and firmware filename for your drive.
STEP 4
If the command in step 3 is accepted, you will need to confirm that you're ready to reflash the firmware. Type in
yes and press enter to begin flashing. The process should take less than a minute.
STEP 5
This is a repeat of step 2 to check if the firmware actually got updated.
In my example screen, you may notice my drive now shows version 1.04, where it used to be 1.00 in step 2.
Basically, make sure your version number matches the one found on the firmware filename. If it did not, the drive probably rejected the reflash and will require some extra bits in step 3.
That should be it. See if the drive takes UHD discs after a reflash.
![Image](https://i.imgur.com/dI9rD23.jpg)