downgrade from ios 15.6.1 to ios 15.6
Hello
the ios 15.6.1 upgrade causes problems with the sound volume, the volume is very low. It seems that it is no longer possible to go back to ios 15.6.
I don't know what's going on at apple but it looks like they're not really testing their update well which is causing more harm than good. Is there please a way to downgrade?
Thanks
iPhone 8, iOS 15