Looking for firmware update 74.xxx.xxx NA

I am hoping someone would be able and willing to direct me to a location I am able to download the newest 74.xxx.xxx NA firmware for my daughters car (2014 Mazada 3 Grand Touring). I updated it to 70.000.100a successfully from the supplier of the carplay unit I am installing, but would like to update to the newest firmware while I am at it if possible.

I tried to message the user ASH8 over at mazda3revolution (Ive seen direction to them) but the forum wont allow PMs with a new account.

Thank you for any help!