I am running original FW at 10.3.28, have Cubic Ninja, and just this weekend installed single CIA file from 10.5.30 firmware = NVer, so that I could go to eshop using HANS and download updates / games. Now I read that doing this is actually dangerous. Can anyone explain what could go wrong? Also, can I remove this file somehow? Replace it with CIA file of the previous NVer? What will happen when I trigger System Update (bye bye NASA)? PS: I do not want to downgrade this 3DS, I have another one that is running old FW.