Something isn't right about this.
Unless I am confusing Meltdown and Spectre there's something very wrong here.
1: Meltdown only affects Intel CPUs but it can be patched.
2: Spectre affects all CPUs but can't (yet) be patched.
3: There is a third AMD bug, which apparently needs physical access to the machine to exploit
So just what is the update supposed to be doing, because i am not sure it should even be trying to install on an AMD machine?