Updating your Samsung Galaxy Nexus from firmware Yakjuxw to Yakju couldn’t be much easier. Thanks to the developer ‘WugFresh’ and webtrikz.com guide.
A small issue at step 4 when nothing happens when “Flash Stock + Unroot” and pressing OK. Nothing occurs and this is partly the user’s fault. When you installed it, it recommended to install at the default directory.
“Installing the toolkit to the default directory is recommended. Enjoy!”
To solve this uninstall and reinstall it at the default location and do the steps again in the guide.