Thank you, that worked perfectly!ok then you should be able to use updatecdn to download 4.5 for your region, and then use edittmd to mass edit the whole directory to make all the versions FFFF.
i think nus3ds/3dsnus can do all of that in a gui though (but i'm assuming you are on windows so that is ok), try it out
then just install the cia files
Say, do you know how to tell the version number of each update?