Zorin doesn't install Dell firmware update

Regularly, I'm notified by Zorin's Software app that a Dell firmware update is available. It's always v1.11.0 > v1.25.0. When clicking on “Install”, I'm asked to re-boot the system. After doing so, the update notification in the Software app is gone. However, after a couple of days it always re-appears. Trying to upgrade using Gnome Firmware fails too. What can I do about this? Thanks!

OS: Zorin 16.2 (Ubuntu 20.04 LTS)
Linux kernel: 5.15.0-71-generic
CPU: 11th Gen Intel® Core™ i7-1165G7 @ 2.80GHz × 8