In theory this LVFS is nice. In practice it has always been useless for me, because I have never owned one of not so many machines supported.
This morning I tried my ThinkPad X1 Carbon 5th, which is now on the list of supported devices.
The updater did not find anything to update, although I'm sure I don't have the newest BIOS installed.
From reading the article I guess my updater could be too old (not using Fedora 28) or the update is still blacklisted from some other reason.
Let's see whether this start to work some day...