Hi there, I had two NAND backup (of the same 3ds), one of v9.2 and other of v4.2 which was downgraded. But, sadly my data got formatted and on pendrive, I was only having one, which I don't even know that of which firmware it is. So, my question is that, is there any method so that I can know that to which firmware does it belong? And, secondly, if I ever need to do hard mod, can I "patch" my downgraded v4.2 NAND firmware backup? Thanks in advance for answering guys!