Update to a specific iOS version
I was wondering if it's possible to update to a specific version of iOS that is slightly older than the current version (13.3.1 is the one I want to use). I recently got an accessory for my iPhone XS and it will not work correctly on iOS 13.4 and above. I know that you can download the IPSW and use that in iTunes, but I was wondering if apple had a way in iTunes to update to a version that is not the newest.
iPhone XS, iOS 12