So, I have 5.3.2 (e) console with NNID on it. I create new account for me, and want to remove older one. I google and found two options, to unlink account and delete all data -factory reset-. Which is a better option to avoid system update? I can get password to login into NNID account, but console need to have internet access. On the other side console haven't security PIN so I can make factory reset, but when I try that, console ask for internet connection. Any suggestion to remove NNID and not update console?