Lenovo are pretty good with their use of LVFS + fwupd. There's a chance it can be included with system upgrades outside of the game mode experience? It's worth contacting the vendor about, though.
As an example, my T14 Gen2a gets all SBIOS (and other fwupd) upgrades via the gnome app store. I presume the same integration is in place for KDE's Discover store.