Locking Sim after unlocking?

[vuiskool]

Is there a way to relock your phone after unlocking it with the Kaiser unlock program on this website?

I recently just got the code from AT&T and i would like to use that instead for warranty purposes.

Anyways to do this? Thanks in advance.

[mf-fll]

Hey man... try to search the foruns before.
http://forum.xda-developers.com/showthread.php?t=335568