The community-standard GUI tool for flashing UHD drives safely.
Unlike newer "MK" (MakeMKV-specific) patched firmwares like 1.03-MK or 1.04-MK, the 1.00 "DE" (Downgrade Enabled) version is widely compatible with a broader range of software, including DVDFab and Xreveal .
: Unlike some modern "MK" (LibreDrive) versions that are optimized primarily for MakeMKV , v1.00 is widely compatible with other power-user tools like DVDFab and Leawo Prof. Media.
Note: As mentioned on the MakeMKV forums, while 1.00 is great, 1.03mk is also a popular "friendly" firmware, and moving between 1.00 and 1.03mk is generally easy. Managing Heat and Performance on the BU40N bu40n 100 firmware hot
What does your BU40N drive currently show in MakeMKV?
This is the firmware the drive might have shipped with originally. On the DVDFab hardware compatibility list, this is listed as supported for UHD copying (often labeled A100 ). It is a baseline version that lacks the security "patches" introduced in later revisions. However, users report that while it works for basic MKV ripping, it occasionally fails to enable UHD Copy or Creator functions without further patching.
Secure the clean, customized firmware pack from the official MakeMKV forum directory (look for the automated firmware pack containing HL-DT-ST-BD-RE_BU40N-1.00-NM-MK ). Flashing Procedure The community-standard GUI tool for flashing UHD drives
Firmware 1.00 does not have the power-saving restrictions found in later updates (1.01, 1.02, 1.03). The OEM firmware assumes the drive is inside a well-ventilated laptop. When used in an external USB enclosure, the laser diode runs at higher current, generating significant heat.
Run the flashing utility as an Administrator.
For home media enthusiasts, the is a legend in the world of 4K optical drives. But the real magic isn’t just in the hardware—it's in the v1.00 firmware . While newer versions exist, v1.00 remains the "hot" choice for its unique balance of compatibility and raw power. Why Enthusiasts Hunt for v1.00 This is the firmware the drive might have
| Metric | Firmware 1.00 (Hot) | Firmware 1.03-MK (Fixed) | | :--- | :--- | :--- | | Idle Temp (no disc) | 48°C (118°F) | 38°C (100°F) | | Reading DVD (10 min) | 62°C (143°F) | 47°C (116°F) | | Ripping UHD (30 min) | 71°C (159°F) | 55°C (131°F) | | MakeMKV LibreDrive | Yes | Yes | | Read Speed (UHD) | 4x | 4x (no loss) |
The MoodScapes feature offers a unique blend of lifestyle and entertainment benefits, making the BU40N 100 an even more enjoyable and integral part of daily life.