Nobody thought of ...
... how are we going to use iTunes when the device is (unavoidably, a few OTA updates later) bricked?
Or when jailbreaking?
I can't think of the horror of possible vulnerabilities that's called transferring a IPSW file over Wi-Fi and putting device into DFU Mode, again, over Wi-Fi.
Fuck you again, Apple.
Biting the hand that feeds IT
