I successfully did the 4.0 downgrade using Davi91's instructions. This was from originally having a "unfortunate" clean 4.0 with no previous cios. Previously of course, it blocked wads, but now with that downgrade, I am able to install wads again. OK, here's where I am confused (I searched many older topics). If I want to run, copy or move Wads from the SD, do I need to downgrade again (say to 3.2), then re-upgrade this time using Waninkoko's 4.0 upgrade? Or, is the current 4.0 I am at now the correct one and all I need is some other file to get that wads to work correctly with the SD? As it is now, I can install wads, but I cannot move them from SD back to memory or run them from the SD. Thanks in advance.