Adobe has entered the worst of all possible worlds with a Lightroom app software update irrevocably wiping out people’s images and imaging presets in a process the company has had to admit means those assets are “not recoverable”.
Lightroom goes dark
A little more background:
The problem impacts Lightroom users on iPhone and iPad, and not on other platforms and only if those users have not already synced their assets to the cloud. In other words, if you have backup, you can recover your data.
And if you don’t, you can’t.