As noted in other topics, N5 update crashes on opening here on W7 64 and N5 32 bit. I found my own solution
disclaimer: I`m not reversing anything here. The software is free to download and i´m not analyzing anything in the update code:
download and install Uniextract: http://legroom.net/software/uniextract (its free : http://www.softpedia.com/progClean/Universal-Extractor-Clean-56951.html
download latest 5.1.1 update.
Uniextract installs as Win shell extension so right click update and “Extract here”
Look in “AutoPlay” and then in “Docs” for the proper .msi installers.
Hope this helps
P.S Dear Mods, please remove this post if I am violating anything, but on the other end the updater just doesnt work.