www.makemkv.com

Update:
Thanks for the info, and understand to post links vs attachments.
Confirmed drive reads/recognizes disc(s) before launching MakeMKV, same result. Removed from case and used same Dell slimline SATA cable used to flash. Flashed back to 1.03, and connected directly to Windows PC, bypassing the Archgon enclosure entirely — same result, rules out enclosure blocking LibreDrive or at least not only fix.
Key finding on Bus encryption flags:
• After very first flash to 1.03-MK (before any UHD discs inserted): flags were 1F ✅
• After multiple failed UHD disc attempts across firmware versions (1.03-MK, 1.00, back to 1.03-MK): flags now showing 17 ❌

Flags have not recovered through subsequent reflashing. Suspect the failed AACS key exchange attempts during UHD disc insertions caused the disc's MKB to update the drive's internal AACS state, dropping flags from 1F to 17. Is this recoverable, and if so how?

Current state: 1.03-MK firmware, Bus encryption flags 17, LibreDrive shows Enabled/Patched but UHD ripping still failing with "host certificate revoked" on all discs tested (Bohemian Rhapsody v66, The Mule v68).

Drive info in MakeMKV
Drive Information
OS device name: F:
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.03
Serial number: MO8P5xxxx
Firmware date: 2118-10-24 19:34
Bus encryption flags: 17
Highest AACS version: 70

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.03
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

Disc Information
Label: BOHEMIAN_RHAPSODY
Timestamp: 2019-01-14 16:45:31
Protection: AACS2.0/C v66
Data capacity: 61.13 Gb
Disc type: BD-ROM UHD
Number of layers: 2
Bus encryption flags: 80

Hi, New to trying to RIP my 4K library, getting failure and attaching the 2 dumps files. Background below, asking for any clues to the issue. Thanks for any help to resolve...

Drive: HL-DT-ST BD-RE BU40N, Serial MO8P55I2701
Enclosure: Archgon MD-8107S-U3YC-UHD (USB-C enclosure — known to block ...