Firmware Updates and Update Messages on an Older Computer running Linux Ubuntu

After I upgraded my Linux Ubuntu computer to version 25.10, I kept getting the message "Firmware available for KEK CA". I searched Gemini AI for an explanation and, possibly, for a fix, and this was the answer I got: Click here for answer.

So I opened the Terminal and typed in " sudo fwupdmgr update " (no quotes); (Gemini did not include "sudo" but you might have to include it to make things work correctly.) 

After I ran the command in the Terminal I received the message:

"WARNING: UEFI capsule updates not available or enabled in firmware setup

See https://github.com/fwupd/fwupd/wiki/PluginFlag:capsules-unsupported for more information.

Devices with the latest available firmware version:

 • UEFI CA

Devices with no available firmware updates: 

 • Fujitsu BIOS DB Certificate

 • Fujitsu BIOS KEK Certificate

 • DB

 • KEK

 • KEK CA

 • MQ01ABD100

 • Option ROM UEFI CA

 • Phoenix Kek Example

 • SBAT

 • WD20SDRW-11VUUS0

 • Windows Production PCA

So, back to Gemini to ask what all that means (using the Warning message only to form my inquiry). The full answer is here, but basically it  means that the firmware for my really old Fujitsu computer cannot be updated using the CLI phrase above. Instead, I was advised to update my firmware according to the Manufacturer's advice, something I might attempt to do (and will post, if I try it).

Now I am reduced to "updating my old Fujitsu computer the old way, according to the manufacturer's instructions"; finding some way to disable the "Firmware available for KEK CA" message; or just ignoring the message and living with it. Stay tuned.

NOTE: This post is full of links that were created when I, out of curiosity, clicked on the little pencil icon in Blogger that says "Automatically insert Google Search Links" into your post. Doing so formed in me an immediate and visceral love/hate relationship with this new Blogger feature.

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