I've read a post by fix94, the developer of cbhc or at least the installer for it, that cbhc can sometimes fail to install. it shouldn't cause the system to brick, just relaunch the installer. as far as something like that above post happening, I dunno. I use my wii u almost daily, and I've had cbhc installed for four or five years, and I've never had any real issues with it. I've done almost every hack on both systems except for indexiine and ios 80 patching on the virtual wii, and so far everything has gone well. I've also uninstalled cbhc when I was going to switch from yoshi's island ds to brain age. never had an issue there. I deleted yoshi's island ds and redownloaded it from the eshop.