use modmii to download 4.3U system menu wad, then unpack it using showmiiwads or any tool really, the 00000001.app file is the same as 00000097.app (md5 hash should be f388c9b11543ac2fe0912ab96064ee37)
or you can wait until I push another modmii update or modmii patch, or you can manually adjust the modmii.bat file in notepad, search for all instances of NusFileGrabber.exe, and add this URL to the end of the line:
http://ccs.cdn.sho.rc24.xyz/ccs/download/
for example, change:
Code:
support\NusFileGrabber.exe %version%
to
Code:
support\NusFileGrabber.exe %version% http://ccs.cdn.sho.rc24.xyz/ccs/download/
after making this change modmii's *.app downloads should work (assuming ModMii has patched itself during an update check to use an updated version of nusfilegrabber)