Some links for Brazil.

Few Brazilian sources say this face lift debuted in 2002 for the 2003 MY.

KBB: https://www.kbb.com.br/nissan/frontier/2002/
https://www.kbb.com.br/nissan/frontier/2003/

https://www1.folha.uol.com.br/fsp/veiculos/cv3006200203.htm

Debuted at the October 2002 show as a 2003 line: http://falando-sobre-carros.blogspot.com/2014/04/plataforma-d22-nissan-frontier-o.html