I have this game just tell me what I can do. I wanna help
I hate to be negative but the odds of that bsod occuring again are phenominal. This "incident" leading to a breakthrough of sorts is unliky imo. I really goofed when i didnt record on paper what i did, right after i did it. If you want to try then by all means. Unfortunately all i know for sure was that i was in a hctdm lobby. I do remember my console getting sluggish the last moments before crashing though. There was a pop up window open when it crashed maybe, like a "use the pro ctrlr", or "leave lobby" or something; one of those or similar i think.
The bsod is basically saying, "i have no answer for this". Ive been racking my brain trying to figure out what little detail was overlooked that allowed this. i.e. i tried yanking out the ext. hdd with the blops update/patch on it, but the wiiu had an answer for that, that being a screen sayin "blah usb ext. hd removed, reinsert n restart blah blah" That means the unit had an answer to that issue, which is stop the game and open a window. Now with that theory in mind, ive been racking my brain trying to deduce what i did that the unit would not have an answer for. I think its in the menus, like i said i had something in the foreground like custom classes or w/e when it crashed, but i think i remember there being a pop up involved. Try crashing the pop ups by getting multiple of them. Like join a party and fail, and when you get drug back to the main screen switch controllers, so that you have two alerts (couldnt join/use this ctrlr for P1?) fighting each other for foreground. Just a wild theory....