Before trying so many things, go into the BIOS, Security section / Secure Boot / access the keys and delete or factory reset the DBX keys.
This should allow you to update.
If it doesn’t work, verify that you have the latest BIOS version. Even after flashing the BIOS, you need to reset the Secure Boot keys, at least the DBX keys, or all of them if you don’t have that option.
Reference images:
Please do not necro post. You also made a duplicated post in a other older topic.
I created you a newer topic.
Hello. It took me quite a while, but I managed to solve my issue once and for all. The desktop PC I bought was sold as “without an OS”, but there were some “traces” of FreeDOS there. When I went through the old Fedora Anaconda installation using the default option the disk was set to MBR. The OS worked, I managed to to get rid of the notification by using some of the “solutions” on the original thread, this weird installation also gave me a non-functioning FreeDOS entry in my GRUB, but I ultimately reinstalled my OS, fixed the disk did the a proper fwupd. Thank you for reminding me to post this.
It looks like you refer to this solution right?
As an addition:
It is good practice to make hard disks with GPT and not MBR. The new Anaconda installer can not see secondary devices with MBR boot record, alias not let you select them for installation.
Exactly. The /etc/fwupd/uefi.conf edit was just a temporary solution, but a complete reinstall with a GPT drive was the ultimate solution. It was my first time buying such a PC it really took me a while to finally commit to a clean install.
It is possible to convert mbr to gpt. I made it on my own and documented it here:
i came across this, but at that point I thought I might as well do a clean one. It is good that you included the option here, though. Hopefully it will help someone. Thank you.