The specific file you are looking into is a multipart compressed archive ( .rar ):

Large firmware files are often split into multiple parts (e.g., part1, part2) to make them easier to upload and download from hosting sites like 4shared or Telegram . You must have all parts to extract the usable firmware.

Includes built-in WiFi and standard LVDS connector types for screen interfacing. Firmware File Breakdown

This likely refers to a 60Hz refresh rate setting specifically configured for the panel it is intended to drive.

Typically features 512MB to 1GB of RAM and 4GB of internal storage . Processor: Equipped with a dual-core processor.