That is not an application that is a wm6.5.3 based rom and it is not for the HD. You were linked to the relevant posts above on what you need to do to flash to a new rom and where to find roms for the HD. Please don't ask questions that have already been answered for you.
One of the best things about the modern day smartphone is its ability to save us … more
02 Sep 2014
By Will Verduzco
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?