Is it possible to load characters only with ipsw (without device) for a character?

I received an application crash report from a client with an iOS 4.3.2 device. I don't have a device with this version, so I downloaded .ipsw and thought about putting it in the xcode Organizer software image section so that I could symbolize iOS logs, but that didn't work. Any idea if this is possible without a device?

Thank!