To give you more specific advice, I’d need a bit more context:
Seeing a ".part2" file can be confusing if you aren't used to split archives. Here is everything you need to know about what this file is and how to use it. What is a .part2.rar File? ga251.part2.rar
Files found on forums or third-party hosting sites carry risks. Before you run any .exe or install firmware from a GA251 archive: To give you more specific advice, I’d need