What if I don’t want a certain update how do I stop it

It is certainly not wise not to update your iPhone.

You were able to read in Related article ->Apple security updates -> Keeping your software up to date is one of the most important things you can do to maintain your Apple product's security.

Read also this -> About iOS 15 Updates -> About iOS 15 Updates - Apple Support

If you still want to disable the update at your own risk, go to -> Settings -> General -> Software update -> Automatic updates -> Disable : (1) Download iOS updates & (2) Install iOS updates.

after updating to 15.4.1 my iphone 7 plus battery is draining within 24 hours... in use less than 2 hours in that 24 hrs

PLEASE what is the fix... I read that 15.4.1 was to fix battery drainage on 15.4

HELP.. can I uninstall 15.4.1..... or is there a fix.. thank you

Even if you don’t need the bug fixes listed in the update description, you do need the security updates. Without them, your iOS device is wide open to malware attacks until you update to the latest software.

See -> The last update killed my battery!

The last update killed my battery! - Apple Community

Yes , there for you need to update to iOS 15.4.1

👉 iOS 15.4.1 includes bug fixes and security updates for your iPhone and is recommended for all users.