Have no idea! Does it mention anything about it on that link I posted? As far as I know, this hidden menu is literally just a way of accessing information, and nothing that is done there is permanent or potentially harmful to the car, but with that said, I am always very very careful about what I do and find out first before taking a chance.
I highly doubt that it would have changed your software, if it was as quick and easy as that then the dealers would be able to update the software a lot quicker/easier too! Has anything actually changed since this reset?
BMW E90 330i (M) '05 (His) | (Hers) BMW E46 320i f/l (M) '03