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SYMBIAN OS V9.3

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How to upgrade ROM-based plug-ins securely

Phone manufacturers may want to provide installable upgrades to plug-ins that have been delivered in a phone's ROM, to fix defects or to add functionality. This can be done, but only if certain conditions are met for both the original ROM plug-in and for the upgrade. This page describes these conditions.

Note that ECom finds and uses installed plug-in upgrades even if:

ROM plug-in conditions

Only plug-ins made upgradable when the ROM is originally built can be upgraded. To do this:

Plug-in upgrade conditions

When you create the plug-in upgrade, ensure that the following conditions are met: