I have a brand new, N3DS XL with 9.9 firmware. I want to downgrade. The last new one I had was when 10.3 was the latest FW. Then I was able to just update to 10.3 and use what I believe is called browser hax. Can I do the same with newest FW? I thought I read somewhere 10.4 stopped it, but is again possible in 10.5. Please let me know what the easiest method would be. Thanks.