All i had to do was to delete mirc.exe, then replace it.. mirc.ini is still the same, and now the version show ok, mirc.ini keeps track of files that should be loaded, and stuff like that, the version is in mirc.exe it self, so dosent mather if u keep ur old mirc.ini ..

in my "old" mirc.ini
[about]
version=6.21
so mirc.exe write that line it self.. "i did only replace the exe file, nothing more"