Hey, is Win8 build 7989 x64 only or can I install a 32bit Version of build 7989? Would it be possible to update build 7955 to 7989? The upgrade from old Win8 M1 to 7955 was NO SUCCESS, so is it possible to Upgrade 7955 to 7989? If not, is it possible to copy/replace the changed System Files etc. ? Mfg Takeo