Problema para desbloquear telefono

Hello  Javier ,
We are sorry for not replying in your native language but we do provide support only in English. Could you please post your query in English so that we can understand it better and assist you with it? Thank you.

hola, tuve que arreglar el (nexus 5), y a la vez he cambiado de compañia de telefono (de jazztel a vodafone). Cuando he insertado la nueva tarjeta de telefono, vodafone, el antivirus me pide un  codigo de seguridad para poder desbloquear el terminal. No recuerdo el pin de seguridad, he tratado de cambiar el pin en la pagina de avgmobilation.com  pero no piedo pprque no se puede connectar con el nexus 5.
¿como puedo solucionarlo?, gracias.

Hello  Javier ,
We are sorry for not replying in your native language but we do provide support only in English. Could you please post your query in English so that we can understand it better and assist you with it? Thank you.