Change file keep url

Question

Hello.

I have a very important question :

If i have a website : http://example.com and i have a file : http://example.com/wp-content/08/file.txt .

this file contains : 1.0.0.0 and i want to change this to 1.0.1.1 but i want to keep this url and not to change the url too .

Is this possible ?

Help me pls !

 Many thanks !