Can't flash BP55EB40 or downgrace MakeMKV

[Gucosh]

Hello there,
I am new here and I am trying to flash my Hitachi BP55EB40 to watch an 4K UHD Blu-ray disc, but I am running into some problems. I am using CachyOS with the Linux 6.19.10-1-cas kernel.
I am sorry if a similar issue has been posted here and I couldn't find it.

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Drive Information
OS device name: /dev/sr0
Manufacturer: HL-DT-ST
Product: BD-RE BP55EB40
Revision: 1.03
Serial number: SIK06M1AD3427
Firmware date: 2120-05-07 09:24
Bus encryption flags: 17
Highest AACS version: 68

LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.03
DVD all regions: Possible (with patched firmware)
BD raw data read: Possible (with patched firmware)
BD raw metadata read: Possible (with patched firmware)
Unrestricted read speed: Possible (with patched firmware)

And when I use "makemkvcon f" the only output I get is "Loaded SDF.bin version 0xa5":

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❯ makemkvcon f -l
Found 1 drives(s)
00: dev_21:3, /dev/sr0, /dev/sr0
  HL-DT-ST_BD-RE_BP55EB40_1.03_212005070924_SIK06M1AD3427
  
❯ makemkvcon f -d /dev/sr0 help -v
Loaded SDF.bin version 0xa5

❯ makemkvcon f -d /dev/sr0 -f ~/Downloads/sdf.bin -v rawflash enc -i ~/Downloads/HL-DT-ST-BD-RE_BP55EB40-NB50-1.03-NM00800-212005070924.bin
Loaded SDF.bin version 0xa5
  

I also read in this forum that you should downgrade to 1.17.7 for flashing. I tried doing that by downloading the old AUR package from here: https://aur.archlinux.org/cgit/aur.git/ ... 176564f28f, changing "{url}/download/${pkgname}" to "{url}/download/old/${pkgname}" in the PKGBUILD and running "makepkg -si". It downloaded "makemkv-bin-1.17.7.tar.gz" and "makemkv-oss-1.17.7.tar.gz" successfully, but it aborted with:

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==> ERROR: A failure occurred in build().
    Aborting...

Complete output is here: https://pastebin.com/b6UsHTvJ

Then I tried to install the downloaded packages with pacman:

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❯ LC_ALL=C sudo pacman -U makemkv-oss-1.17.7.tar.gz makemkv-bin-1.17.7.tar.gz
loading packages...
error: missing package metadata in makemkv-oss-1.17.7.tar.gz
error: 'makemkv-oss-1.17.7.tar.gz': invalid or corrupted package
error: missing package metadata in makemkv-bin-1.17.7.tar.gz
error: 'makemkv-bin-1.17.7.tar.gz': invalid or corrupted package

When I unzip them though, they look fine.

I am unsure how to progress from here, and would appreciate your help.