Gp.7z -

: Use The Unarchiver or the p7zip command-line tool.

: Use a hex editor to check the first few bytes. A valid 7-Zip archive must start with the characters 7z¼¯' . : Use The Unarchiver or the p7zip command-line tool

: If the file is only a few KB but should be a large game patch, it may be a partial download. it may be a partial download.