No se si has probado con esta, pero mira a ver si tienes los mismos códes :

These Nokia Unlock Codes are Generated For Nokia 6050 with IMEI: 357597004478198 (DCT 4) Locked to Provider Retevision Movil Amena in Spain and will only work with this phone!

#pw+122044746032052+1#
#pw+897391015565403+2#
#pw+029223445744635+3#
#pw+237515051527224+4#
#pw+894911514261125+5#
#pw+233395755175203+6#
#pw+298125512673730+7#


Recommended CODE :#pw+298125512673730 +7#