High temperatures can expand internal components slightly, leading to "ScSI Error" or "Read Offset" failures mid-rip.
Excessive heat can lead to thermal throttling , causing the drive to slow down from 6x to 2x or even stall completely.
If your drive came with a newer, restricted firmware (like 1.04 or 1.05), you may need to "downgrade" it to regain UHD capabilities. bu40n 100 firmware hot
To keep the drive "cool," enthusiasts often use it in an external enclosure with better airflow or place the drive on a laptop cooling pad during long sessions. How to Get Firmware 1.00
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 To keep the drive "cool," enthusiasts often use
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.
Open MakeMKV and check the "Drive Information" tab. It should list the product as HL-DT-ST BD-RE BU40N . Open MakeMKV and check the "Drive Information" tab
Firmware version 1.00 is considered the "holy grail" for the LG BU40N (and rebadged versions like Archgon or Verbatim slim drives).