If I understand correctly, any piece of software that would be used would need to be signed by Apple. Furthermore, the FBI's warrant(?) says specifically that it would only need to work for one device ID. Thus it would be relatively straightforward to create an update for the FBI that could pretty clearly only be used on the phone in question. Unless the FBI had Apple's signing key they could not reuse the software (…
> would be relatively straightforward to create an update for the FBI that could pretty clearly only be used on the phone in question How? Wouldn't the FBI reverse engineer it? It seems like apple would have to update all phones to a new version (which would prevent the exploit provided to the FBI) before handing it to them.
Edit: see, for example, here: https://stratechery.com/2016/apple-versus-the-fbi-understand...