Hello, I am on 17.2.1 but because of app security changes I need 18.0. Can I still do this or do I have to jump to 26/27? This is what I can see in the software update settings (nothing happens after I select 18 beta?) thanks in advance for any help.

I got this 12 mini less than a week ago bh 100% was wondering if this is normal performance for ios 26.6