I have an iPhone SE that I didn't update to the latest #LiquidAss yet, it's still on iOS 18.7.1
But now there are important security updates and Apple is forcing me to update. They released a new 18.7.x but my phone model is apparently not allowed to install this update.
WTF.
@compfu I'm pretty sure they don't do cumulative incremental updates. I think I've had to install multiple updates in a row on work phones
@anakin78z Apple really pulled the plug and allows the installation of the latest security updates in the 18.7.x line only for phones that can't run iOS 26: https://www.forbes.com/sites/kateoflahertyuk/2025/12/19/ios-1873-which-iphones-can-run-apples-critical-new-update/
iOS 18.7.3—Which iPhones Can Run Apple’s Critical New Update?

Apple has released iOS 18.7.3, but it's not available for all iPhones. As Apple tries to push users to iOS 26.2, which iPhones can run iOS 18.7.3?

Forbes