I could have 4.1, I just thought I had 4.2, I havent acturally tried fixing my wii in the past fourish months though. (Its been bricked for a while, just never bothered dealing with it)
And since Bootmii couldnt be attached to Boot2, I thought having a NAND backup would be pointless. (If my Wii was broken to the point I needed a NAND, I didnt think I would even be able to fix it since its not on Boot2, I had no idea you could use external applications to fix it back up)
Too bad you thought that. Well now you know to always make a backup of your NAND. It's in the guides as a mandatory step for a reason.
Cogita ante salis
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