," are typically not hosted on public file-sharing sites as multi-part RAR files by the manufacturer. Instead, Sansui provides software updates through official channels. Official Update Methods
Flashing firmware from unofficial sources (like multi-part RAR files from third-party forums) carries a high risk of permanently "bricking" your TV if the file is corrupted or for the wrong version of your hardware. Download SANSUI CONTVSNX50FH18XAF part03 rar
If the TV won't boot, you can perform a hard reset via the Android Recovery Menu. Unplug the power cord, hold the TV's power button, and plug it back in until the recovery menu appears. Select Wipe data/factory reset . ," are typically not hosted on public file-sharing