Hi dudes! After 2 hours trying to repair it by myself, I will ask you about a weird thing happened to me. I recently bought a couple of 3DS on a lower version of 4.5 Firm because I have 2x Gateway waiting for me at home. I start with the tutorial, but my white 3DS doesn't recognize the blue gateway, the other blue gateway, the old R4 that we used to play DS games, and the other R4i double core card. The weird thing is that is able to read original 3DS games like Pokemon X, Pokemon Y, Fire Emblem Awakening, Virtues Last Reward, Soul Hackers, etc... I tried to clean the contacts of all the cards, blowing inside the slot, trying more than 100 times, formatting it again, and it doesn't detect the card at the slot. Now it's at 4.5.0-4E. Any ideas or suggestion to make it work? Thanks for all!