No. TZ stands for "Trust Zone". Explain to us the steps you took to flash. Also, which bootloader package are you trying to flash?
I am having the same problem. The steps are
1) I download everything from this page
http://xdaforums.com/showthread.php?t=2759863
2) then I put my note on download mode.
3) In PDA or AP I put bootloader file
4) then I press start, re-partition disable, but I failed and cannot flash bootloader
I tried all Odin, 3.0.4, 3.0.7, 3.0.9 and all giving the same error. And when I try to flash UK kitkat stock firmware, it fails giving NAND start up and then fail, I tried several times but I don't know what to do. I am running civz 4.2.2 rom right now and I want to update to kitkat