Files from unofficial sources can contain trojans, spyware, or ransomware that can infect your computer once the archive is extracted.

Flashing typically requires a USB-to-serial adapter or a dedicated programmer like the RT809F or CH341A , along with a computer. Official & Recommended Resources

It is highly recommended to seek official software from authorized channels to avoid damaging your hardware or downloading malware.

A flash dump is a raw copy of the data stored on the television's internal flash memory chip (often an EEPROM or NAND chip).