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 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
Do not turn off the power during this process to avoid "bricking" the board. Extract the
If the TV continues to restart, you may need to perform an EMMC software update instead of the standard USB method. Download MS338 PB801 1366x768 REF40 part4 rar