Copied from another site, much easier than it sounds, instructions are on the hyundai site
NX4 8-in infotainment has an update.
Received this email just now (29th April, 2022).
Get those USB drives ready, and the weekend is just beginning! lol
UPDATE:
For 8in and 10in infotainment that needs to update only their infotainment’s audio experience, head over to
Official Hyundai Motors Navigation Update Website
Then when the banner by the Notifications (leftmost banner) changed to “Display Audio Gen2V,” click on it, then click “list of available vehicles..”
Then on the list, look for you appropriate NX4 trim then click download.
For those that have navigation on their infotainment, another update file is needed.
Same link but this time wait for the Notifications to change to “April 2022 Map Update.”
You need to download first the application and install it on your PC/Mac, then download the appropriate update file based on your infotainment”s software version.