> 12.3 | Application and Data Protection

> In addition to the Java secured mode it is possible to prevent the activation of the Module Exchange Suite. When Module Exchange Suite access is deactivated with AT^SJSEC, it is no longer possible to access to the Flash file system on the module. A condition for the deactivation of the access to the Flash file system is the existence of a customer root certificate inside of the module (see Section 12.2.1).
> The default state of MES is ON.