macOS Catalina Power Settings – How to Disable Powerchime

It sounds like you are trying to retrieve the ipsw file directly from the ios device because the device has already downloaded the file internally. There is no way to retrieve the ipsw file version from the iPhone itself - if you even could - it may not be compatible to work through the Mac. Instead you will need to redownload the file on the Mac instead

you can use terminal command:

sudo pmset schedule cancelall

Then you can resolve it