paid to Mazda Connect this morning...
pls, view the link,
https://www.mazdas247.com/forum/index.php?threads/navigation-maps-are-updated-for-september.123873393/
i certainly will talk to the service manager in the dealership, perhaps they might give you a new original SD card. ps. SD cards, USB drives, Hard Drives and other electronic storage medium can go bad at any given time.
good luck talking to the service manager.
if the battery is not holding the charge, chances are you might not be able to start your engine in the morning and or you can tell the starter in not that powerful, after parked all night.
follow the instructions on the link and on the screen prompts. it might a little slow due to the computer's specs. but you will get it.
good luck.
here is the link:
https://infotainment.mazdahandsfree.com/vehicle_select?return_to=%2Fhowto-updatemymaps%3Flanguage%3Den-US