I notice you've written — it looks like you might be asking me to write a post (e.g., for a forum, social media, or blog) on that topic.
Do not use random USB files from forums. Go to the official Nissan website: https://www.nissanusa.com/owners/nissanconnect Enter your VIN. If an update is available, it will show up under “Software Update.” nissan infotainment system update
NissanTechUser