How to fix an exception occurred error during CFW install on Nintendo 3DS

[harlan4096]

If you own a Nintendo 3DS or 2DS console, you are probably aware of CFW. Custom firmware is very useful for a lot of reasons.

Installing a CFW can be a bit tricky. One obstacle which I personally encountered during a CFW install, was the infamous ARM 11 error.

I was curious to see what the newly released Luma3DS 10.0 CFW had to offer, and was trying to get the homebrew launcher running via the Rosalina menu. Once I exited the Download Play app, and re-opened it to open the homebrew launcher, I got the screen that you see above. This step which is a usual part of the install, should have worked, but it didn't.

This tutorial assumes that you are familiar with the popular and well-written guide on 3DS Hacks.

What didn't work for me

Let me save you some time and tell you what not to do. Naturally when I thought the app wasn't working, and tried a different one. A commonly recommended fix, is to use the Health and Information app, which is pre-loaded on the Nintendo 3DS. But when I tried it, the console threw the same error.

I also tried the Luma configuration menu’s options, which includes the Game patching, and disable ARM 11 errors, to no avail.

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