Went to software update on my iPhone, it told 15.6.1 available as a security update, started downloading, it said 1 minute left. For some reason it said an err

Went to software update on my iPhone, it told 15.6.1 available as a security update, started downloading, it said 1 minute left. For some reason it said an error occured when I went back to settings. And now, for the same 15.6.1's description it says: "This update adds the ability to unlock with Face ID while wearing a mask on iPhone 12 and newer. This update also includes new emoji, a new voice option for Siri, and other features and bug fixes for your iPhone. Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222 https://support.apple.com/kb/HT201222" And it now says 45 minutes left. I'm already on 15.6 so the Face ID/Emoji is irrelevant since I already have them being 15.6, and it didn't say any of it when it first showed 15.6.1 as an update anyway. Trying to make sense of the whole thing.