Removed firmware 'encrypted' downgrade check (if present in firmware).Removed firmware downgrade check (if present in firmware).Re-enabled ability to read UHD discs (if drive was capable, and disabled in firmware).Re-enabled vendor commands to update microcode in memory.Made from the latest available official firmware.The MK firmware has the following properties: MK firmware is a patched official firmware image, with changes as minimal as possible, only to enable LibreDrive support. This is a custom firmware made by MakeMKV team. This is a good option to downgrade a firmware and get back the features that were available in previous versions, when previous firmware versions are available. No other changes are made to firmware image. The changed byte enables firmware downgrade. This is an official firmware image with a single byte changed, so this firmware can be flashed over the latest firmware. Unfortunately these commands are disabled in latest firmware versions, so firmware update is required in order to enable LibreDrive support - either as firmware downgrade, or as firmware upgrade to a patched version.įor the moment two patched firmware types are available: For most drive models and firmware versions no action is required - the firmware provides an interface (so-called vendor commands) to update the running microcode in drive memory. At the time of this writing LibreDrive mode is enabled for about 200 different drive/firmware variations. Fundamentally, in order for LibreDrive to work, the drive should allow modification of drive microcode in memory.

Wh14ns40 libredrive