Matshita Bdmlt Uj240as Firmware Update
On Linux systems, the fwupd service (Firmware Update Daemon) by LVFS sometimes includes OEM-approved firmware updates. Run fwupdmgr get-updates to check.
Here is where most projects go to die. Do not download a random UJ240AS_UPDATE.exe from a driver website.
Because this drive was used by OEMs like Dell (Latitude E6x30 series), Lenovo (ThinkPad T-series), and Panasonic’s own Toughbook line, the firmware is locked to the vendor.
Do NOT download firmware from random driver websites (e.g., DriverGuide, Softpedia). Corrupted firmware will brick the drive. matshita bdmlt uj240as firmware update
Safe sources:
| Manufacturer | Model containing UJ240AS | How to find |
|--------------|--------------------------|--------------|
| Dell | XPS 15 (L521X, 9530), Alienware M17x R4 | Dell Support → Enter Service Tag → Drivers → Category: "SATA" or "Storage" → Look for "Panasonic BD-RE UJ240AS Firmware Update" |
| HP | Envy 15, Pavilion dv7 | HP Support Assistant → Search "UJ240AS" |
| Apple | MacBook Pro (Mid 2012 – Late 2013) | Only via macOS System Updates (Boot Camp users may find .exe in Apple Software Update) |
Users upgrading from Windows 7 to Windows 10 or 11 (or moving from macOS Sierra to a newer version) have reported that their UJ240AS drive stops being recognized. A firmware revision can improve ATA command handling and driver compatibility. On Linux systems, the fwupd service (Firmware Update
"Firmware update tool says 'No target device'"
Drive is now invisible in Windows after failed flash
"Drive works but still can't read certain BD-R discs" Drive is now invisible in Windows after failed flash
The UJ240AS relies on an internal "Strategy Table" to know how much laser power to use for different brands of Blu-ray media (Verbatim, Sony, TDK, etc.). When you buy a new spindle of discs manufactured in 2025, the dye chemistry is slightly different from discs made in 2020.
Your drive, stuck on firmware version 1.00 from 2012, has no idea how to talk to modern discs. Updating to a later revision (e.g., 1.03 or 1.04) adds new "write strategies" for modern media IDs (MID).
If you are attempting to update this drive, you must observe the following critical details regarding the UJ240AS:
Summary of the Feature: The primary reason to update or modify the firmware on a Matshita BD-MLT UJ240AS today is to unlock the DVD/BD Region Code, transforming the drive into a universal player compatible with media from any country.
Specific revisions have corrected bugs related to read retries on scratched discs, sleep/wake behavior in laptops, and error reporting for unreadable Blu-ray discs.