Not sure this is the right place to ask such a question... Is there a way to flash back only a partial part image to the NAND? I'm looking to flash back a modified NAND image to the 3DS. After decrypting the fat16, doing whatever with it, recrypting/crypting the fat16, injecting it back into the NAND image then diff'ing the before and afters, it shows less than 20mb (actually a lot less) has changed. I've seen some stuff using *nix DD command to do stuff with emunand, but is it possible to do it directly to SysNAND via a NAND hardware mod? I've been doing a bunch of testing recently and written the almost 1GB to my 3DS as many times. If it's possible, then it'll take less time and cause less wear (on the whole) to the NAND. Again, not looking for anyone to code anything, I'm just wondering if such a tool is available already. Thanks all. Cheers.