Really important aspect about updating BIOS and in particular with AMD/Ryzen is to read the notes the manufacturer adds to the side of or within the header of the update. Often they will say that they are for specific CPU families, some of them will be improvements to the previous, some of them are what are called bridge BIOS. This last aspect is particularly important as it means that you cannot update the BIOS past that point without first installing it, specifically.
It is not always required to update each single BIOS at a time, read the notes on it. The reason I say this is that where it could be considered a safer method to go and do each one, there is a level of risk you take any time you update a BIOS. For instance, something like a power failure in the midst of the update can brick a motherboard. I tend to advise the use of a battery backup during BIOS updates, not doing during a storm, only while using quality USB media, etc. Messing up a BIOS update is one of the single easiest ways to create a bad situation, so don't take it lightly.