hello everyone, could you show me the way to open the .GWBK files, please?
It's a zip file.
Are you really asking how to restore one into Ignition? Or is that it?
no, they are on .GWBK files
Rename it as .zip. Then extract the contents.
and which file i can open it after extraction
What are you wanting to do?
open a file .GWBK in launcher or perspective
Take a look at this resource in our documentation: Gateway Backup and Restore - Ignition User Manual 8.1 - Ignition Documentation
It seems that what you're needing/wanting to do is to restore that gateway backup file (.gwbk) to a running instance of Ignition.