Look for the folder 545408A7 , which is the unique Title ID for GTA V.
The file is compressed to reduce size. You will need a tool like WinRAR or 7-Zip to extract the actual update file. Typical Installation for Modded Consoles (RGH/JTAG) Download tu00000009 00000000 rar
This part of the filename typically signifies a placeholder or base versioning used in the Xbox file system structure. Look for the folder 545408A7 , which is