Sometime last week a few beady eyed members did notice a halloween link , while that was a partial wind up it did hold some weight with the expected release timing of work @dimok was doing with regards to stabilising @smealum 's iosuhax!
The dumper that was in the wild was mildly successful for some and hopeless for others , today Dimok finished up enough for this to be released but still with an onus on DEV work and not the end user.
This fw.img is both a dumper+rednand booter. For some semi-detailed instructions check here: http://pastebin.com/bmSDJesv
You will find these comments on the github page:
THIS CAN BRICK YOUR WII U IF NOT USED CORRECTLY!!! THE DEVELOPERS ARE NOT RESPONSIBLE FOR ANY BRICKS YOU DO TO YOUR CONSOLE BY USING THIS SOFTWARE!!!