Most TVs require a FAT32-formatted USB drive for the update process.
The file you're looking for, , is typically part of a multi-segment firmware archive for the AKAI AKTV5010 TV Download M538 3840x2160 AKAI AKTV5010 part09 rar
Search for the specific board number (likely M538 ) on sites like BadCaps or Remont-AUD (often requires registration/tests). Most TVs require a FAT32-formatted USB drive for