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
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 Download MS338 PB801 1366x768 REF40 part4 rar
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. If the display remains incorrect after installation, you
If the TV continues to restart, you may need to perform an EMMC software update instead of the standard USB method. Key Specifications and Use Cases Extract the
Power on the TV; the indicator light should begin blinking, signaling the update is in progress.