You cannot open the .004 file by itself. To access the contents, you must have of the archive in the same folder.
indicates it is the 4th part of a larger file that was "split" to make downloading or storing it easier. Understanding OS5.7z.004 OS5.7z.004
This specific naming convention () is frequently associated with large firmware or software update packages, such as those for operating systems or gaming consoles like the PlayStation 5 (PS5). When files are several gigabytes in size, they are often split into segments labeled .001 , .002 , .003 , and so on. How to Open and Combine the Files You cannot open the