Hi, I don't know where you live but here in Greece as soon as the tri-map option was available Aprilia announced all previous Shiver owners without the maps could go to their dealer and have the tri-map added on to their bikes at no extra cost. Seems to me the best thing you can do is go to your dealer and ask if this applies to your country (I can't see why it wouldn't) and get your FREE uprgrade

If not, ask the cost of the upgrade and then...find the parts(ecu+dash?) on ebay!