Question [Q] S-off for 5.18 firmware????

I just bought the at&t htc one x online. It come with the 5.18 firmware.
I did a little research but could only root the phone with WeakSauce.

I have tried the firewater but not any luck yet.

Is there any way that I could install Recovery or unlock bootloader for now?( I try HTC-DEv but they give me the Error Code: 160.
Error Reason: MID Not Allowed.). I also try change CID but still got the CWS_001

Are we stuck here in 5.18?

By the way, when I boot into bootloader, the phone shows "Tampered" and "Locked"

Is it normal?

Thank you very much.