Hello, I've come across a problem with my purchases of these two R4 cards. I bought them from the ShopTemp website and now I have two R4i Gold cards. I've already checked the inside components and the outer label and I guess I can confirm they're real based on how another thread on here told me to identify them. Anyway, the problem is that I was sent a Revision C and a Revision D, if I'm describing them correctly. The D card works just fine and came with some Konami Japanese game as the bootloader icon, but the C card still has Kirby Squeak Squad and gives me the Error Reading Card thing, despite all the proper firmware being in its SD card. Maybe I didn't look hard enough, but I haven't been able to find a solution in regards to the C card, since that was out years ago. My current 3DS version is 7.1.0-16U and runs the D card perfectly. Is there a solution to getting the C card to work at all? I tried to be as informative as I can, but let me know if you need any other info to help me out.