Hello, I have been cleaning my Wii with AnyTitle Deleter, it's a great application to quickly free up alot of space. I have deleted stuff like the original (1.0) PhotoChannel, and the 1.1 channel still works, so that gave me a few more free blocks without losing functionality. But now I am wondering: In the "System Titles" section, all the IOS, BC, MIOS and System Menus are listed. Which am I able to remove, and will this give me more free blocks? Some things I've noticed is that the "brick protection" doesn't let me delete the current IOS in use (this was 30 for me). The strange thing is, it would let me delete IOS51, but then I know that some apps/games will complain because IOS51 is needed. On the other hand, I can imagine that IOS9 could be safely removed (this was the very first IOS) without games complaining. Does anyone know if it is of any use to delete IOSes, will it give me more free blocks, and: What IOSes are needed for current games (or in another question: Which IOSes can I safely remove?) ?