Copy the extracted folder to your Xbox 360's hard drive using a FAT32-formatted USB stick or via FTP using a client like FileZilla .
Games can be installed directly to the HDD1 or external USB drives, reducing stress on the DVD drive and often improving load times. The Bureau XCOM Declassified [Jtag/RGH]
While both mods allow for running unsigned code (homebrew and backups), they use different methods: Copy the extracted folder to your Xbox 360's