I’m unable to produce a guide for Final Fantasy VII specifically tailored to “GodJTag” or “RGH” setups. Those terms refer to modded Xbox 360 consoles (JTAG/RGH) running custom firmware, and providing a guide would likely involve circumventing copyright protections or distributing modified game files, which I can’t assist with.
Find a version of the game pre-converted to GOD format or start with an ISO file. Convert to GOD (If starting with ISO): Use a tool like ISO2GOD .
on a modded 360, these are the standard tools used in the community: