Hi I just recently bought a Gateway 3DS and it worked perfectly doing the online exploit. But I decided to downgrade it. The downgrade went perfectly, and everything works. Now the main problem is installing the physical exploit with the blue cartridge. The blue cartridge doesn't get read by the 3DS at all. I got my friends 3DS XL and tried it on his, and it worked perfectly on his. 3DS carts work fine on my 3DS, and so do normal DS carts. I also had a DSTWO and that also couldn't get read by my 3DS. My friend's 3DS XL read it fine. The online exploit still works, so I still have that as backup, but I downgraded because I wanted an offline exploit. I really need help, and I have no idea what to do. I tried everything. I cleaned the contacts, formatted the microSD, put it in and took it out 100 times, nothing. I don't know what to do. Help please!!! I'm desperate!