For manual installation, your USB drive must be prepared specifically for the TV's hardware: : Use a Windows PC to format your USB drive to FAT32 .
When firmware is split into multiple parts (e.g., part1.rar and part2.rar), you must have in the same folder on your computer to successfully extract them. Requirements : Use a tool like WinRAR or 7-Zip . Download TOSHIBA 39L4300EE Firmware part2 rar
Ensure your TV is connected to a stable Wi-Fi or Ethernet connection. For manual installation, your USB drive must be