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Removing the persistent storage (RMS) during application update
This article explains how to remove the persistent storage (RMS) during application update.
The RMS is not deleted if the MIDlet is replaced by another MIDlet that has the same name. The RMS is always deleted if the MIDlet is removed from the device. The easiest solution to delete an existing RMS is to ask the end user to remove the current MIDlet and then send an SMS and download the second MIDlet to the device.