The phrase "a firmware update" is correct and usable in written English.
You can use it when referring to the process of installing new software on a device's firmware to improve functionality or fix issues.
Example: "Please ensure that you perform a firmware update on your router to enhance its security features."
Alternatives: "a software update" or "a system update."
Since the debut of the E-P1, Olympus has released a firmware update that improves its autofocus performance.
Meanwhile, it is always possible that Apple could figure out a firmware update that could disable Psystar's clones.
Your wireless router may also be having a problem and need a firmware update or other attention.
The Peak promises to perform smartwatch duties after a firmware update, but right now it feels slightly unfinished.
This doesn't seem to be working right now, but a firmware update should make many of your PS3 titles accessible while on the move.
If a firmware update does not help, check to make sure the router is not overheating and that it has plenty of airflow around it.
A firmware update will be applied to the knapweed/ladybells NFS cluster which provides file access for Blackboard and the middleware share used by PeopleSoft.
It also seems that the PC version won't be compatible with Xbox and that the new features such as Near Mode will not be coming to the console via a firmware update.
In mid-December, Philips – best known for the fabulously popular compact cassette and then the fabulously unpopular digital compact cassette – released a firmware update for its Hue LED light bulbs and controllers.
The first generation barely lasted for longer than four hours at a time but the new version (with help from a firmware update out earlier this month) easily pushes past the eight hour mark.
They float by, offering notifications like these: "Shifting bits... Reducing complexity... Opening flaps... Calculating odds... Refactoring Bezier curves... Herding cats... Rearranging deck chairs... To be honest, just downloading a firmware update".
