Hey guys,
I took the time and finished up the wupinstaller stuff today that I started last weekend. It now finishes the update clean and correctly and exits back to Mii Maker / HBL without any issues. So you now have the more proper way of installing titles on it (previous install progress version) and that without a hang at the end.
Furthermore I added a new feature to it. You can now choose where to install the title to. If you press A you will install the title to the system memory and if you press X you can install the title to the USB storage device (only game updates). If no WiiU formatted USB storage is attached you will get an error and it will return to the wup installer menu.
Here is a test version to see if it also works for others and not only for me and
@dibas :
http://www36.zippyshare.com/v/ly8ycL7W/file.html
Like before it should work on any firmware that HBL works on. I might add a selection menu for titles on the SD card at some point for a 2nd release (not only "/sd/install" path) but I dont know when I find the time for it. Its not on the top of my list.
Report if you find something out of the ordinary. I will make a release out of it in a few days and put up the source code on github if nothing pops up.