Partialy recovered from brick. Some things work, most forms of homebrew don't.
Alright, so here's the backstory. I spent all of last night trying to figure out how to change my region to download the Kirby TV channel from the EU Wii Shop and succeeded too! But when I tried to reinstall it with Wad Manager, it give me the error ret = -1022. I read up on it and somebody said I needed to downgrade my IOS.
Now I'm no newb when it comes to this stuff, and not to sound like I'm making excuses, but I was tired, and even being on 4.2, I did it anyway. This resulted in a full brick during which nothing would load past the BlSoD.
So after remembering I had Preloader installed, I managed to get to the HBC and from there Dop Mii to redownload the 4.2 firmware. To my relief, this had the much anticipated effect of repairing the system, or so I thought. However I quickly found out all was not fixed. I'll no further bother you with a long story, so here's a quick checklist of things that no longer function as they should.
Most Homebrew, (HBC loads, Preloader and BootMii work, but the only application I can launch without getting a BlSoD is Dop Mii).
Super Smash Bros. Brawl, (BlSoD upon launch).
Super Mario Galaxy, ("An error has occurred" pops up on screen before the disk image even loads).
Dop Mii SysCheck, (Freezes solid after scanning IOS35).
Dop Mii Installation of IOS36 with FakeSign.
Bannerbomb, (freezes solid upon loading the banner in the SD card menu).
Any other details can be provided upon request. I just decided to post here before I went ahead and upgraded to 4.3 since that is a last resort for me, (that and I apparently hacked it so well that I'm unable to do so at this time. :P).
WARNING ISSUED - Please watch the language