: This often stands for "No Operating System" or "Non-OS," indicating the board uses a basic real-time operating system (RTOS) rather than a smart platform like Android.

: This signifies the Full HD resolution . Firmware for these boards is resolution-specific; flashing the wrong resolution (like 1366x768 on a 1080p panel) can result in a distorted image or no display at all.

: The compression format used to package the binary file (.BIN) that must be extracted before use. 2. Purpose of the Firmware