Default Nextel Mexico XT1053 > T-Mobile XT1053

So I unlocked the bootloader on a Nextel Mexico XT1053.
I flashed it with this using RSD Lite.

Does this change it completely into a T-Mobile Moto X? How do I relock the bootloader now?
I tried the "fastboot oem lock" command but it doesn't work.

Google Nexus 4
T-Mobile Galaxy Note II