Use branch 5.3 for the new release.

debian/resources/config.sh

@@ -3,7 +3,7 @@
 domain_name=ip_address                      # hostname, ip_address or a custom value
 system_username=admin                       # default username admin
 system_password=random                      # random or a custom value
-system_branch=5.2                           # master, 5.2
+system_branch=5.3                           # master, 5.3
 
 # FreeSWITCH Settings
 switch_branch=stable                        # master, stable

freebsd/resources/config.sh

@@ -3,7 +3,7 @@
 domain_name=hostname            # hostname, ip_address or a custom value
 system_username=admin           # default username admin
 system_password=random          # random or as a pre-set value
-system_branch=5.2               # master, 5.2
+system_branch=5.3               # master, 5.3
 
 # FreeSWITCH Settings
 switch_enabled=true             # true or false

ubuntu/resources/config.sh

@@ -3,7 +3,7 @@
 domain_name=ip_address                      # hostname, ip_address or a custom value
 system_username=admin                       # default username admin
 system_password=random                      # random or a custom value
-system_branch=5.2                           # master, 5.2
+system_branch=5.3                           # master, 5.3
 
 # FreeSWITCH Settings
 switch_branch=stable                        # master, stable