BlackBerry device memory requirements for BlackBerry Device Software updates over the wireless network

The BlackBerry device must have 16 MB of RAM and at least 64 MB of flash memory available to start and complete a BlackBerry Device Software update over the wireless network.

If the amount of available flash memory on the BlackBerry device decreases to less than 400 KB, the BlackBerry device runs the LMM automatically to identify and delete unreferenced and cached data associated with BlackBerry device applications such as the message list, organizer data, and data for third-party applications.

If the update process requires more memory, the LMM deletes medium-priority items such as very old email messages and out-of-date calendar entries.

If the minimum amount of memory required is still not available, the BlackBerry device user must delete items manually.