Hello! I used the so called "Pink Fish Disc" before when I was still on 3.2E, information about it can be found here on Wiibrew. It booted just fine in recovery mode under 3.2E and was actually one time really useful to recover my Wiis serial number, which wasn't readable on the bottom of my Wii. I needed it to delete my shop account at that time as I wanted to switch it to another region. Anyway, I doubt that I will ever need it again but after updating to 4.0E I just tried to find out what was still working and what not and noticed that this disc doesn't boot anymore and wonder if that is normal. Did Nintendo maybe blacklist it somehow or should it still work? By the way, is there another way now to recover the serial? On the screenshot on Wiibrew you can see it in the top right corner (LU104019557 in that case) and it is the one also printed on a sticker at the bottom of the Wii. This information really helped me a lot back then, is there a homebrew tool maybe these days that also can recover the serial, maybe some kind of info tool?