I dont know why but I can't unban my jtag, and this is what I did. I got my CPU key and a fresh copy of my nand, opened my flashdmp.bin in 360 Flash Tool and it says my dvd key and my dvd type (OSIG) is: None Drive Info - Unspoofed, I clicked on keys and made sure my CPU key was there with the two top boxes were checked and two bottom one weren't, I clicked import, checked off Key vault, opened the KV_dec.bin file and it says Incorrect Extended KV file, wrong length!. So now I heard three different things that people told me I need to do, someone said that I need to patch it onto it, which I don't know how to do. Someone else said that I need my original nand, but I dont think I have it because I bought my jtag from someone and he sent me a 40963kv.bin file that is 17 KBs big and a 40963.bin file that is 16,896 KBs big. I don't know what these files are for, and I can't get in touch with the seller. Another person said that something is wrong with the Kvs, but I tired three different kvs and they all did the same thing. So If there is anyone who had this problem or anyone who knows how to fix this please help