Next major update to the Navi Radio Media Phone?

highway speeds over 100km and vibration is just as bad as it was before.... whats the point of a TSB if it doesn't fix anything.
While I can't tell a "km" from a "pm", I think I agree that at speeds over 70MPH, I'm also seeing vibration with the replaced mirror base. I'm starting to wonder if the replacement part was any different from the original. The TSB claims a "different shape", but it looks 100% identical to my eyes. Perhaps a mixup with part numbers?
 
Can I update the Gracenote software on a 2015 CX-5 myself or do I have to take it to a dealership? If I can do it myself is there a particular version of software I need to use?

Sorry, I am a Newbie here and this is my first Mazda I have ever owned.
 
dont recall if 2015 infotainment was same as 2016 but try with this one

you may already have latest if somebody has updated the infotainment.
 
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