Remember: The 3DS modding scene is mature and stable. Error 0xd8e0806a is a mechanic’s whisper—it tells you exactly where the weakness in your setup lies. Listen to it, fix the underlying issue, and you’ll be back to gaming in no time.
If the file is correct on your PC but "breaks" when you put it on the SD card, your SD card might be failing or corrupted. failed to install cia file 0xd8e0806a