Mike, unless you stored your files to a memory card (which only some version of the V3##) had access to, or transferred it previously to your computer, the information will be saved onto a memory chip on your logic board. In the case of the V3 it is a PF38F4050L0YBQ0 flash memory chip. It is only possible to retrieve it if you
1. have a flash memory IC reader or
2. have the knowledge to build one and
3. have the right software to read the information.
That is why professional services charge hundreds of Dollars to retrieve that information. Maybe you have a connection with some digital forensics expert that could assist you with that. If your logic board is viable, you might think about fixing your phone.