: Typically Menu + 1147 or Input + 2580 .
While finding specific numbered "parts" (like part 10) can be difficult due to broken links on various forums, you can typically find the complete consolidated firmware or individual board software through these resources: : For the TP.MS338.PB819 Download MS338 PB819 1366x768 REF30 part10 rar
: There are specialized channels like lcd tv led tv smart tv software that host archive files for various resolutions, including 1366x768. : Typically Menu + 1147 or Input + 2580