I've recently hardmodded my Old 3DS, so that I'm able to restore my A9LH NAND backup (due to my mistake I ended up losing it after updating to 11.1 firmware). Because I planned to make it a 1-time mod, I soldered the franken SD card direcly to the motherboard, without using any connectors on the way. It seems to work with my SD Card reader - after connecting it, NAND is detected on my PC immediately, but for some reason, I'm only able to dump it to a file, not write to it. I have used 3DS NAND checker to compare 4 NAND dumps that I've made, everything checks out as far as NAND dumping is concerned: But when I try to write my NAND backup (in .bin format), I keep getting this error message: Any ideas on what might be causing it? Here are the pictures of my solder joints, though I don't think the issue lies here (I've checked the connections with a multimeter): Warning: Spoilers inside! I have already tried using a different SD adapter, same problem. It here any other software than Win32DiskImager that could be used for writing to NAND? Thanks in advance for suggestions.