The latest batches of the board should come with the BIOS updated, but it depends on your vendor and which batch he got. So the best person to ask would be your vendor or their customer service. In case its your local dealer, he/she should be able to update the BIOS for you.
In the worst case scenario, where you need to do it on your own, you can also do it free of cost by contacting AMD and getting the "boot kit"... https://support.amd.com/en-us/kb-articles/Pages/2Gen-Ryzen-AM4-System-Bootup.aspx