Performing a DFU with an iPhone works in some configurations and fails in other. Android consistently works.
The failing version of iOS is:
iPhone 12 mini
iPhone 13 pro max
iOS v18.3.1
Device Manager version 1.9.1
The working version is:
iPhone 12 mini 18.2.1
Device Manager 1.9.1
This issue is very similar to the issue seen in case 338790.