Bu40n 100 Firmware Hot ((exclusive)) -

Never cross-flash a BU40N with firmware from a desktop drive (like the WH16NS60), as this will permanently brick the slim drive. Ultimate UHD Drives Flashing Guide Updated 2021 : r/makemkv

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 .

Excessive heat can lead to thermal throttling , causing the drive to slow down from 6x to 2x or even stall completely. bu40n 100 firmware hot

The BU40N is an ultra-slim laptop-style drive. Because it lacks a dedicated internal fan and has a small physical footprint, it generates significant heat during the 45–90 minute process of ripping a 4K disc.

Version 1.00 is a "UHD-friendly" firmware that allows software like MakeMKV to bypass AACS 2.0/2.1 protection on 4K Blu-rays. Never cross-flash a BU40N with firmware from a

Firmware version 1.00 is considered the "holy grail" for the LG BU40N (and rebadged versions like Archgon or Verbatim slim drives).

High temperatures can expand internal components slightly, leading to "ScSI Error" or "Read Offset" failures mid-rip. The BU40N is an ultra-slim laptop-style drive

Some users report that 1.00 is the most stable version for burning high-capacity 100GB BD-XL discs, whereas newer versions can occasionally trigger write errors. Managing Thermal "Hot" Issues

Open MakeMKV and check the "Drive Information" tab. It should list the product as HL-DT-ST BD-RE BU40N .

Look for DE_LG_BU40N_1.00.bin within the "All You Need Firmware Pack" widely shared on the MakeMKV Forums .