RE: Need bios latitude files(NOT APPLICATION TO GAIN FILES, IT WILL GIVE ERROR)
Not sure I really understand what you're saying. The BIOS files are executable files so you should be able to download them, just not actually run them on whatever system you're using to access the downloads.
You may want to read this article on the Dell Diagnostics Deployment utility and creating a bootable USB drive to deploy the BIOS updates.
If I'm totally misunderstanding your issue please let me know. But as far as I know you can, and I have done so, download the BIOS executable files to another system and deploy that file to the Dell system.