Let me be blunt: You should almost never download InsydeFlash.exe alone from a third-party website. Here’s why:
Because the .exe is not commonly downloaded by many users worldwide, SmartScreen may show a warning. That’s normal. As long as you downloaded directly from Dell/HP/Acer, click "Run anyway." insydeflash.exe download
If you are an advanced user looking specifically for the generic Insyde flashing tool: Let me be blunt: You should almost never