Hi and Welcome!
Seems, you have installed the "automagic firmware update tool" from the software disc, which came with the drive. I personally don't trust these "autoupdate" software at all. I prefer the manual way: download the firmware from the support website and install manually.
The reasons for the availability of firmware updates are already described.
There is one rule: if your hardware works without problems, then there is no need to upgrade your firmware.
I'd uninstall the autoupdate software, so it doesn't annoy you anymore.