Recently, I've been getting into modding RVT-R and RVT-H units. I really want to figure out how the IOSs differ from retail to development units, as well as the difference between the 64MB RAM units and the 128MB ram units. I'm also looking at how to patch new modules into the development IOSs. One thing I have been searching for is official wads of all the development IOSs. There really aren't easy to find. I considered making wads with a tool like ShowMiiWads, but I hate to use homebrew tools when messing around with development units. The tools are great, but were never meant to be used on development files. Who knows what weirdness might occur? A while back, I tried opening the update images that are included with the Wii SDK. These are named 'swupdate_56.21.29_us.gcm' and so on. GC-Tool can't open these files, and neither can trucha or WiiScrubber. So I did what I have always done when I have no idea what to do, I turned to my handy-dandy hex editor. Opening the update GCM reveals this: I was curious, so I opened another wii game in the editor. It looked like this: I started scrolling though the update gcm and found this, which looked just like the elebits header. I simply deleted the entire empty header and saved the file: There's no way this is going to work, right? That's too easy. Wrong. Use wii scrubber and the RVT common key: There you have it. Official RVT Wii wads. Enjoy.