"useful update" is correct in written English.
You can use it when referring to a piece of information or a change that has a positive effect. For example: "We've just been sent a useful update on the coronavirus situation."
Also, some useful update news for all the many people who left totally brilliant ice-cream flavour suggestions on the original blog.
Then Apple will provide its first genuinely useful update in a generation; getting rid of that rat-king of useless Apple cables I insist on keeping in my desk in case I need them one day.
A new analysis by dozens of scientists provides a useful update on measured and anticipated impacts of human-driven climate change on ecosystems from western forests to coastal waters.
The accounts of the Fourth and 10th are not among its highlights, however, so these live performances, from a concert in Chicago in May this year and a BBC recording from the Proms in London in 1986, provide a very useful update.
This will be providing a useful update on the state of the art of contemporary dental implant surface technology.
Google Maps just released a small, useful update for its Maps desktop product (via TNW).
As they fight through the disorganized Combine forces and rampant alien infestations, Kleiner appears on the screens Breen once used to pass out propaganda, and gives out useful updates to the evacuating citizens about the latest turn of events as well as reiterating the Citadel's imminent collapse.
Regularly commenting on and sharing interesting and useful updates helps you keep in touch and be useful.
Here are some useful updates from Twitter: Satellite Imagery Reveals Likely Cause of Wind Shift That Killed 19 Firefighters.
Recent postings have included mundane but useful updates on local mosquito sprayings and mail delivery problems, as well as news about the sale of a local historic property destined to become a condominium complex for the elderly.
It's all comedy: making one another laugh matters more than providing useful updates about ourselves, which is why entirely phony profiles were all the rage before the grown-ups signed in.
