Can I change algor sha1 to sha256 in SBC 3820 SCX6.4.0 MR-6 Patch 2?

Can I change algor sha1 to sha256 in SBC 3820 SCX6.4.0 MR-6 Patch 2?

When want to change  the certificate-record it not show the algorithm parameters, How can I do?.

certificate-record

name BanCerMaxcom

country MX

        state Nuevo_Leon

locality Monterrey

organization Grupo_Financiero_Banorte_SA_de_CV

unit Seguridad_Informatica

common-name MAXCOM

key-size 2048

alternate-name

        trusted enabled

key-usage-list

                                       digitalSignature

keyEncipherment

extended-key-usage-list       

                                       serverAuth

options