No. This error does not indicate a brick or permanent damage. It simply means the installation process could not complete. Your 3DS remains functional.
If you have encountered this error while updating a game or installing a .cia file, this updated comprehensive guide will explain exactly what this error code means, why it happens, and how to fix it step-by-step. What Does Error Code 0xD8E0806A Mean? failed to install cia file 0xd8e0806a updated
If none of the above steps resolve the issue, you can try: why it happens