I followed the Plailect's guide very carefully and got otp.bin. Now I'm in 2.1 and have several sysnand backups. I selected sysnand restore option to restore my sysNAND_original.bin that I got from OTP helper but it said backup size is wrong. I checked its size and its 1.300.234.240 bytes, which is supposed to a Samsung NAND chip size. (https://github.com/Plailect/Guide/wiki/NAND-Size). Then I checked my other backups made from Gateway launcher, and realized that they are 1.979.711.488 bytes which is a Toshiba NAND chip size! So, what should I do? Which brand is my NAND chip? Am I screwed? Edit: I forgot to give some info. It's a New 3DS LL JPN. Also I have Cubic Ninja.