(often branded under HL-DT-ST or Verbatim) is a popular, slimline 4K UHD-friendly optical drive favored by enthusiasts for ripping media via MakeMKV. However, users frequently encounter performance bottlenecks or, in some cases, severe overheating issues when running certain firmware versions, particularly the stock 1.00 or when attempting to flash custom firmware to "hot-swap" functionalities.
drives ship with or are flashed to firmware 1.00, which, while sometimes considered "friendly" for certain types of ripping, is notoriously unreliable for newer or more demanding 4K UHD discs.
Within the MakeMKV community, the naming convention can be confusing. You will often see references to 1-00DE , which is a community-recommended patch. Additionally, you may encounter a revision listed as . As seen in community logs, a drive may report a Revision of U100 with a specific firmware date (e.g., 2119-10-16 10:36). While "U100" is technically the revision identifier, the user goal remains the same: converting that locked U100 revision into a fully functional 1.00 MK/DE version.
"Heat doesn't affect optical drives."
This is the safest method to flash your drive, often cited in â community guides . Summary of Findings
When enthusiasts refer to the "BU40N 100 firmware hot" topic, they are talking about the critical need to downgrade newer drives (like those with firmware BN14 or later) back to version 1.00. 1. UHD Friendly Status
If the fan (if your enclosure has one) becomes loud or the drive slows down, take a break from ripping. Conclusion: Is the 1.00 Firmware Worth It? bu40n 100 firmware hot
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sites typically only host the latest versions (currently up to 1.05). Flashing Obstacles
The proven solution is to cross-flash to the using SDFtool Flasher. This eliminates the overheating without sacrificing LibreDrive compatibility. Do not let your BU40N cook itselfâflash safely today. (often branded under HL-DT-ST or Verbatim) is a
Slim drives are susceptible to heat, and specific firmware versions might not manage the laser assembly's heat dissipation efficiently, leading to drives becoming "hot" during long backups.
Since official channels wonât give you the 1.00 firmware, the enthusiast community has created tools to help. The MakeMKV SDF Tool
The Ultimate Guide to the LG BU40N 1.00 Firmware: Fixing UHD Friendliness and Heat Issues Within the MakeMKV community, the naming convention can
Reports concerning the HL-DT-ST BD-RE BU40N drive with 1.00 firmware
"Yes, the BU40N on 1.00 runs hot. Yes, it's annoying. But it's still the most reliable slim 4K ripper available. A $10 fan solves everything."