03-26-2012 02:01 AM
03-26-2012 08:05 AM - edited 03-26-2012 08:06 AM
You will have to create a new product with the current and "correct" product ID. Your users wont be notified. You might be able to ask RIM to clear the old app out. There was a thread that this can be done under some circumstances.
There is no promo codes. This is one of the more frequently requested item. No word from RIM if this will ever be added. Your choice is to offer "free" version of the app with limited functionality. You can also do a try and buy if your app is a paid app.