Power on the TV; the indicator light should begin blinking, signaling the update is in progress.
Large firmware files are often split into multiple compressed segments (Part 1, Part 2, etc.) for easier downloading from forums or file-sharing sites like Kazmi Elecom . You must download all parts into the same folder before extracting to ensure the full software image is reconstructed correctly. Installation Guide Format USB Drive: Use a FAT32-formatted USB flash drive.
If the display remains incorrect after installation, you can use a small patch file via the "Import/Export" option in the Service Menu to specifically change the resolution without a full firmware re-flash. Troubleshooting Download MS338 PB801 1366x768 REF40 part4 rar
Always back up your original firmware using a tool like the RT809F programmer before attempting an update.
Extract the .rar parts to obtain the firmware file (usually named allupgrade_ms338_2G_sos.bin or similar) and copy it to the USB root directory. Update Procedure: Insert the USB into the TV's port while it is powered off. Power on the TV; the indicator light should
Do not turn off the power during this process to avoid "bricking" the board.
The is a common Android-based "combo" motherboard used in various 42-inch and other Smart LED TVs. Users often search for specific firmware files, such as "MS338 PB801 1366x768 REF40 part4.rar," to resolve issues like the "logo hang" problem, display resolution mismatches, or system restarts. Key Specifications and Use Cases Installation Guide Format USB Drive: Use a FAT32-formatted
This specific firmware is tailored for 1366x768 (HD Ready) displays.