There are a few things I'm not 100% clear on... And I hate stuff I don't understand. 1. IOS. What exactly is it? Is it parts of the operating system, and new IOS are added to run more functions? 2. cIOS. That's "custom IOS", right? Does custom mean that it is homebrew/edited, and not official? 3. Are there any lists of what the different IOS are? At least the official ones. 4. Menu version. The name sounds a little weird to me, is it the software that runs the menus/channels/settings etc? Is this stored in IOS too? 5. Firmware. When I think firmware I'm thinking controller for a piece of hardware. When it comes to Wii, what hardware are we talking about with firmware? Motherboard? How do you know what version you have, is this updated with the regular system update, and what exactly differs from version to version? Does it even affect homebrew? 6. Elf and dol. Was elf-files the previous executable files before dol? What happened to them? What is the difference, and are original Wii files in this format too? 7. Wad. Is a wad-file a pack which extracts when you run it, or is it just copied over (.wad on the Wii too)? Are original Wii channels in .wad format? 8. Are there any region differences when it comes to IOS/wad/dol/elf? Does every Wii in the world have the "same" files?