Failed To Install Cia File 0xd8e0806a Updated May 2026

Do not skip steps. Follow this sequence exactly.

In simple terms, this error usually points to a title version mismatch or a database inconsistency. Specifically, it often means:

The keyword "updated" is the biggest clue. Here is the most common user flow that triggers 0xd8e0806a: failed to install cia file 0xd8e0806a updated

Why did this happen? Because the base game you installed was likely a Legit CIA (a clean dump from eShop) or a Region-Free patched CIA, while the update is a standard cryptofixed CIA. The encryption seeds do not align.

Alternatively, you may have installed the base game to NAND (internal memory) and are trying to install the update to SD (or vice versa). The AM module sees the title ID in two physical locations and throws a fit. Do not skip steps

If you are seeing this error specifically because you "updated" something:

The core problem is that your 3DS thinks the title is already there, but the new CIA disagrees. You need to wipe the slate clean. Why did this happen

Why this works: By deleting the old base game, you remove the conflicting signature. Installing in sequence (Base → Update) ensures the AM module sees the update as a dependent DLC, not a separate conflicting file.

If nothing else works, the .cia file itself might be corrupt, but only in the metadata section that stores the version number. Convert it to a raw .cci (3DS) file and then back to a cleaned CIA.

Now that you have fixed the problem, avoid it happening again: