| Firmware Version | Key Fixes & Improvements | Notes & Context | | :--- | :--- | :--- | | | Drive launch version. | Often the stock firmware with which the drive shipped. | | 1.01 | Resolved: Discs randomly failing to load. | A significant early stability update. | | 1.02 | Early stability improvements. | Mentioned in Linux bug reports (K3b) as a version some users had. | | 1.03 | Minor stability improvements. | A version seen in user reports on Microsoft's Q&A forum. | | 1.04 | General stability/performance improvements. | A stepping stone to later, more advanced updates. | | 1.10 / 1.11 | Stability improvements, preparation for later fixes. | Identified as the base version required before updating to 1.12. | | 1.12 | Critical Update. Fixes: DVD-RAM formatting progress bar; video noise on some BD-R 4x discs. | Targeted for 3D-compatible models. Updates from 1.10 or 1.11. | | 1.20 | Significant improvement to write speeds, enabling proper 6x writing. | A major performance boost for writing. Spotted in an ImgBurn log. |
Close all open applications. Temporarily disable your antivirus software and any disc-burning programs (like ImgBurn or Nero) that might attempt to poll the drive during the update.
This happens when using firmware intended for a different vendor (e.g., trying HP firmware on an ASUS drive). Ensure the flasher matches your laptop brand.
Users often discuss firmware, such as this thread on the UJ240AS, revision 1.02 . matshita bdmlt uj240as firmware update
: Newer firmware versions (such as v1.04 or v1.12) are designed to help the drive recognize and write to newer brands or batches of BD-R/RE media that were not available when the drive was manufactured. Operating System Stability
Issues burning, burning too slowly, or burning "coasters" (unreadable discs).
Flashing the wrong firmware (e.g., using a Sony-branded firmware on a drive that came in an ASUS laptop) can permanently "brick" the device. Always verify the OEM origin of your hardware before proceeding. | Firmware Version | Key Fixes & Improvements
Right-click the downloaded .exe flasher and select Run as Administrator .
The Matshita (Panasonic) BDMLT UJ240AS is a classic internal slim Blu-ray burner widely used in older laptops and external enclosures. While it is a reliable workhorse for reading and writing optical media, many users encounter compatibility issues when running modern operating systems like Windows 10 or Windows 11.
Finding a firmware update for the Matshita (Panasonic) BD-MLT UJ240AS Blu-ray drive can be challenging because these drives are typically "OEM" components. This means support usually comes from your laptop manufacturer rather than Matshita itself. | A significant early stability update
Resolve issues where the drive fails to recognize specific Blu-ray or DVD media.
Finding firmware for Matshita (Panasonic) drives can be challenging because Panasonic primarily supplied these drives directly to Laptop Original Equipment Manufacturers (OEMs) like Dell, HP, Sony, and Lenovo. Look for OEM Support Pages First
The Matshita BD-MLT UJ240AS is a designed primarily for laptops, though it also appeared in some desktop systems. It's known by several names—also referred to as the Panasonic UJ-240 or Matsushita BD-MLT UJ240AS. The drive gained particular popularity in Sony Vaio laptops (including the VPCF11 series and FW590 series), ASUS ROG gaming notebooks (G53Jw, G73Jh, G73Sw, G74Sx models), and NEC VALUESTAR desktops.