Visit the Panasonic Global TV Download Page and search for the model TH-24D400D/DX.
Go to Menu > Help > System Information to see your current version. Download VST59 PA506 Panasonic 24D400DX Dump rar
Copy the file to a FAT32-formatted USB drive, insert it into the USB 1 port , and follow the on-screen prompts after turning the TV on. Visit the Panasonic Global TV Download Page and