unlock iphone 3gs

[igor2009]

hi
i have a iphone 3gs
how do I unlock

version: 6.1.3 (10b329)
mobile network: sunrise 14.0
model: mc637fd/a
serial number: 87139alfedg

thanks

 

[willerz2]

For the 3GS new bootrom, the most reliable method would be to IMEI unlock it.

 

[igor2009]

as if makes?
thanks