That version, 7C91vAK1(Beta version), updates the TPM firmware.
Gigabyte implemented TPM one month later. I think they’re released pretty much at the same time as the updates.
I have version AL1 and i see they have version AL2 that fixes a resume issue on PS/2. I don’t care about that so i won’t update this one.
Edit: Or might if i get bored! 
Please… Please… Push the button!
Adventure awaits!
Okay I got bored! As usual every time I do a UEFI Bios update I end up at grub rescue. Sometimes I’m able to get the proper boot in uefi settings but in a lot of cases it gets wiped so I have to arch-chroot and I’m on btrfs so it’s a little more work. 
Reinstall grub and run the update grub command. Then set the proper boot in UEFI settings.
**Machine:**
**Type:** Desktop **Mobo:** Micro-Star **model:** MAG B550 TOMAHAWK (MS-7C91) **v:** 2.0
**serial:** <superuser required> **uuid:** <superuser required> **Firmware:** UEFI
**vendor:** American Megatrends LLC. **v:** A.L2 **date:** 08/14/2026
Luckily, you’re able to fix a problem like that on your own. I’ve never really been able to figure out GRUB. My system runs on systemd. When there are errors in the system, I usually know what to do.
Glad to hear you got it working again 
Have the same thing going on with my Gigabyte mobo, of the times I updated the Bios, there was only one time it didn’t wipe the first boot option available. But I have multiple distro’s installed and it would boot from the grub of Debian (at the moment the second boot option). Now only recently I noticed that you can safe a profile to a USB stick, have to try that option next time I update the Bios .
I actually noticed that yesterday, too. I’ll have to look into how that’s supposed to work.
Copied this from the bios manual:
Bios& Save Profiles
This function allows you to save the current BIOS settings to a profile. You can create up to 8 profiles and
save as Setup Profile 1~ Setup Profile 8. Press to complete. Or you can select Select File in
HDD/FDD/USB to save the profile to your storage device.
& Load Profiles
If your system becomes unstable and you have loaded the BIOS default settings, you can use this function
to load the BIOS settings from a profile created before, without the hassles of reconfiguring the BIOS
settings. First select the profile you wish to load and then press to complete. You can select Select
File in HDD/FDD/USB to input the profile previously created from your storage device or load the profile
automatically created by the BIOS, such as reverting the BIOS settings to the last settings that worked
properly (last known good record)
Great thanks. Yeah I have set up a profile in BIOS. Just need to copy one of them onto an usb
Funny thing I had been wondering about a option I saw available on other mobo’s where you could backup the current Bios before updating, and why that option was not available on this one, and there it was staring me right in the face, oh well 
I’m the opposite I’m more familiar with grub.I actually like limine bootloader also that’s being used on CachyOS and Omarchy but my knowledge on it is low.
The great thing about Linux is that everyone can customize their system however they like and in a way that works best for them.
To be honest i don’t do much if any customization. This is why it’s so hard because there are too many options, every desktop or wm has umpteen different things you can do or change and it’s just too much for me. I stick with sane defaults. I really like my EOS KDE and i have no issues with it because i leave it alone.
I’ve learned that you have the fewest problems with the default settings. What KDE offers is the most usable. The more you change, the more problems you’ll run into. It’s the same with everything else. I only use my own color scheme and “darkly” as the application style for a blur effect. That’s it.
Exactly!
@swh
I wish I could set up and have an endeavourOS Hyprland that is as good as the KDE installation and matched Omarchy as far as the tiling set up and bindings. It would be my ultimate endeavourOS install.
Edit: I’ve tried so many Hyprland installs using others dotfiles. I don’t like many of the choices of shells and or other things. Omarchy seems to suit me but it has too much in the way of developer use installed packages. I’m interested in an EOS version that matches the current desktop set ups. Minimal but slick! What I like about it is how fast it works.
I found over time that dotfiles which work on one machine do not work well on others machines.
It is hard to find one that works on all and does what you want or have too much of what you do not want.
At least it is fun to play.
It can be fun at times. But when you just want something that works, something you like it can be quite annoying, frustrating and a losing battle. Time gets wasted without the results you’re hoping for.
I’m very old-school. I don’t really get tiling DE. I also don’t like wasting days building a desktop edition that might or might not be usable at some point.
On Point. Just running simple KDE 