This question is more appropiate in the Blaupunkt FX section where all other items pertaining to RNS310 are discussed
If you were to find a method of adding POI's to the database you would have to modify the SD Card.
At the same time that you modify the card, the unique card code is no longer valid and the card useless.
Another possibility is to alter the database in the CDR image. Problem is that after modification the resulting image and cd are no longer recognized as a valid copy to be installed onto the SD card.
So the answer is NO
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