Ok so I have 2 nintendo 3ds and one of them is my fiances. Like a idiot I didnt back up her 10.4 emunand because my 3ds updated fine to 10.5 hers on the other hand did not. When it first updated it kept saying preparing home menu then staying on a black screen I could push the power button and it would let you click home screen then freeze. When I took off the emunand profile that had all her games on it, it would boot into home screen but all data obviously gone and the profile number also changes so I cant merge the data. Has anyone ever come acrossed this and is there just something in the data corrupted? I also tried taking her back to 9.2 on the emunand with the old data and updating again and it just stays black I switched from both nightly builds to 3.0 rxtools build and nothing seems to work.