hey heres a tip when u launch aroma environment, press and hold the plus button (i think) and then theres a black menu with some options right? on the bottom right it should tell you what to press to enable updates you just press that button, then updates will be enabled

and then the decaffinator will work because updates are enabled. but update the system in the wii u environment, no homebrews running so it works! its supposed to update your system because it can restore your vwii's corrupted files. when its done, open the wii menu and

-do some testing. if it works perfectly, good for u then u go back to that black menu like i said in my first reply and disable updates again, and thats all, hope this helps and is understandable :)