On 25.04, can't update firmware anymore

Ubuntu Version:
25.04

Desktop Environment (if applicable):
GNOME/Wayland

Problem Description:
Since I’ve upgraded to 25.04 (or earlier) my Dell XPS 13 9310 firmware updates will not install. Anyone else have these issues? I have 3.29.0 installed, but 3.33.0 is availble, but won’t install.
If I remember correctly, 3.32.0 failed as well, but it does not show up in the firmware gui.

Relevant System Information:

Screenshots or Error Messages:
I notice that the firmware gui reports Attestation is Not OK.

What I’ve Tried:
Rerunning Upgrade ... multiple times.

Same for me on my Dell XPS 13 9310 with Ubuntu 25.04 and 3.33.0 firmware. The 3.32.0 also failed to install.