multiUPDATE.exe updates
multiAVCHD.exe only. I can't afford full update of all tools during the update process.
Either way, multiAVCHD rarely requires full-download (may be once in 2-3 months) + the download link is to
videohelp.com and the download speed is okay, without ads, banners, waiting time, etc.
http://download.videohelp.com/deanbg/multiAVCHD_4.1.exe